What is Potassium Ferrocyanide and what is it used for ?

Potassium ferrocyanide trihydrate

WHAT IS POTASSIUM FERROCYANIDE

Potassium ferrocyanide occurs as odourless, light yellow crystals which are soluble in water but insoluble in alcohols. Also known as yellow prussiate of potash or potassium hexacyanoferra­te(II), Potassium ferrocyanide is manufactured from hydrogen ferrocyanide and potassium hydroxide. It is not considered to be toxic but is dangerous when heated or mixed with other chemicals. It is commonly used as a laboratory reagent and in the production of dyes, pigments and paints.

Specification

  • Synonyms: potassium hexacyanoferrate(II); Potassium hexacyanidofe­rrate(II); yellow prussiate of potash, tetrapotassium ferrocyanide; potassium prussiate trihydrate; tetrapotassium hexacyanidoferrate (4-), trihydrate;
  • Formula: C6N6FeK4.3(H2O) or K4[Fe(CN)6].3(H2O)
  • Appearance: yellow crystals
  • Mol weight: 422.41
  • Purity: 98+%
  • CAS no: 14459–95–1
  • EINECS no: 237–722–2
  • Density: 1.85
  • Melting Point: 69–71C
  • Boiling Point: 400C decomposes
  • Solubility: soluble in water 211g/L @20C
  • pH: 8–10

It is Stable under normal temperatures and pressures; decomposes on strong heating to evolve highly toxic fumes of hydrogen cyanide gas. It is not compatible with many reagents including strong oxidising agents and acids.

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Uses for Potassium ferrocyanide

Potassium ferrocyanide finds many niche applications in industry. It and the related sodium salt are widely used as anti-caking agents for both road salt and table salt. Potassium ferrocyanide is also used in the purification of tin and the separation of copper from molybdenum ores. It is used to harden iron alloys. It is used in the dying of of wool and silk. Other uses include in metal extraction and to make adhesives, computer electronics, fire retardants, cosmetics, dyes, nylon, paints, inks and plexiglass.

Food grade Potassium ferrocyanide is used in the production of wine and citric acid. It is used to remove copper from wine where copper has been used as a fungicide.

Potassium ferrocyanide can be used as a fertilizer for plants.

It is used in the production of potassium ferricyanide.

Potassium ferrocyanide in the laboratory

In the laboratory potassium ferrocyanide is used to determine the concentration of potassium permanganate and is a qualitative test for copper and molybdenum. Potassium ferrocyanide is used to prepare the red crystals of sodium nitroprusside by treating with nitric acid and then neutralising the solution with sodium carbonate.

When heated it decomposes to produce potassium cyanide (KCN), iron, nitrogen and carbon.

When added to hot dilute sulphuric acid hydrogen cyanide is formed but when heating with concentrated sulphuric acid carbon monoxide is evolved.

Potassium ferrocyanide used to prepare Prussian Blue

Potassium ferrocyanide is used to prepare Prussian Blue, the deep blue pigment in blue printing. It is produced by the reaction of K4[Fe(CN)6] with ferric (Fe3+) ions.

Health & safety

R32 Contact with acids liberates very toxic gas. R52/53 Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.

S2– S22 Do not breathe dust. S24/25 Avoid contact with skin and eyes. S47 Keep at temperature not exceeding 50 C. S61 Avoid release to the environment. Refer to special instructions/ Safety data sheets

For full fetails see MSDS for Potassium ferrocyanide

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Where to Buy potassium ferricyanide online uk

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What is Potassium Ferricyanide and what is it used for ?

potassium ferricyanide

WHAT IS POTASSIUM FERRICYANIDE

Potassium ferricyanide occurs as bright red crystals which are soluble in water. Potassium ferricyanide is manufactured by passing chlorine into a solution of potassium ferrocyanide. It is not considered to be toxic but is dangerous when heated or mixed with other chemicals. It is commonly used in photography and to make dyes, pigments and light sensitive paper.

Properties of Potassium ferricyanide

  • Synonyms: Potassium hexacyanoferra­te(III); Red prussiate; Prussian red; tripotassium hexacyanoferrate
  • Formula: C6N6FeK3 K3Fe(CN)6
  • Appearance: red crystals
  • Mol weight: 329.24
  • Purity: 99+%
  • CAS no: 13746–66–2
  • EINECS no: 237–323–3
  • Density: 1.89
  • Melting Point: 300C
  • Boiling Point: decomposes
  • Solubility: soluble in water 464g/L @20C
  • pH: 6–9

It is slowly soluble in 2.5 parts cold water and in 1.3 parts boiling water; slightly soluble in alcohol. It is Stable under normal temperatures and pressures; decomposes on strong heating to evolve highly toxic fumes of hydrogen cyanide gas. Exposure to light can discolour potassium ferricyanide. It is not compatible with many reagents including ammonia, oxidising agents and acids.

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Uses for Potassium ferricyanide

Potassium ferricyanide used to prepare Prussian Blue

Potassium ferricyanide is used to prepare Prussian Blue, the deep blue pigment in blue printing. It is produced by the reaction of K3[Fe(CN)6] with ferrous (Fe2+) ions. In medicine prussian blue is used as an antidote for some heavy metal poisoning.

Testing for ferrous ions with potassium ferricyanide

The ability for potassium ferricyanide to be used to test for ferrous ions is beneficial both in medical labs to detect ferrous ions in biological tissue and industrial environments to determine if free metal ions are present on steel or other iron surfaces which lead to rusting.

Potassium ferricyanide for use in photography

Potassium ferricyanide is widely used as a chemical reducer in photographic processing to remove silver from negatives and positives (dot etching). This is done to compensate for minor errors in a photograph or to make deliberate changes in the reproduction. In coluor reproduction of photographs, potassium ferricyanide is used to reduce the size of dots on halftone positives without reducing their density and, thereby, reducing the amount of color in treated areas. This is the most important means of manual colour correction of original color photographs.

Other uses for Potassium ferricyanide

Potassium ferricyanide is also used in tempering iron and steel, sensitive coatings on blueprint paper, wood staining, dyeing wool, production of pigments, electroplating, as a laboratory reagent, and a mild oxidizing agent in organic synthesis. In wine production potassium ferricyanide has been used to precipitate out copper if copper has been used as a fungicide on the grapes.

In the laboratory potassium ferricyanide is used to produce the ferricyanites of heavy metals including mercury, silver, copper, iron 2+ and iron 3+.

Health & safety

R36/38– Irritating to eyes and skin.

S2– Keep out of the reach of children. S46– If swallowed, seek medical advice immediately and show this container or label.

For full fetails see MSDS for Potassium ferricyanide

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What is Potassium Hydroxide and what is it used for ?

potassium hydroxide

potassium hydroxide flakes

WHAT IS POTASSIUM HYDROXIDE

Potassium hydroxide (KOH) commonly known as caustic potash, is supplied as white flakes. It is deliquescent and rapidly dissolves in water and forms concentrated solutions of potassium hydroxide also known as potassium lye. The reaction with water is violent producing heat (exothermic reaction). Concentrated solutions in water are clear in colour. KOH is a strong alkaline substance that dissociates completely in water to potassium and hydroxyl ions.

Potassium Hydroxide is manufactured by the electrolysis of the salt potassium chloride. Solid potassium hydroxide is obtained from this solution by the evaporation of water.

Potassium hydroxide is used to manufacture soaps, rayon, paper, explosives, dyestuffs, and petroleum products. It is also used in processing cotton fabric, laundering and bleaching, metal cleaning and processing, oxide coating, electroplating, and electrolytic extracting. It is commonly present in commercial drain and oven cleaners.

Properties of Potassium Hydroxide

  • Synonyms: caustic potash; potassium hydroxide flakes; Potassium hydrate; Potassium lye;
  • Appearance: white solid flake
  • CAS No: 1310–58–3
  • EINECS No: 215–181–3
  • Minimum quality: 99%
  • Molecular formula: KOH
  • Molar mass: 56.11 g/mol
  • Density: 0.84g/cm3
  • Solubility in water: 120 g/100ml (20C)
  • Melting point: 360 C
  • Boiling point: 1320 C
  • pH: 11.5
  • Vapour pressure: 1.3 hPa at 20 C

Specification of Potassium Hydroxide

  • KOH: 90–91% minimum
  • Water H2O: 8%
  • KOH.H2O: 99% minimum
  • K2CO3: 0.5% max
  • KCl: 0.015% max
  • Fe: 3 ppm max
  • NaOH: 1% max
  • Ni: 5 ppm max

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Potassium hydroxide readily absorbs moisture and carbon dioxide from air and deliquesces. When dissolved in water or alcohol or when the solution is mixed with an acid the reaction is highly exothermic. When heated to decomposition it emits toxic fumes of K2O. When potassium hydroxide is wet, it attacks metals such as aluminium, tin, lead and zinc to produce flammable hydrogen gas.

USES OF POTASSIUM HYDROXIDE

Potassium hydroxide to make other potassium compounds

Many potassium salts are prepared by neutralization reactions involving KOH. The potassium salts of carbonate, cyanide, permanganate, phosphate, chloride and various silicates are prepared by treating either the oxides or the acids with KOH. Potassium hydroxide used in the manufacture of biodiesel

Although more expensive than using sodium hydroxide, KOH works well in the manufacture of biodiesel by saponification of the fats in vegetable oil. Glycerine from potassium hydroxide-processed biodiesel is useful as an inexpensive food supplement for livestock, once the toxic methanol is removed. Potassium hydroxide used in the manufacture of soft soaps

The saponification of fats with KOH is used to prepare the corresponding “potassium soaps” which are softer than the more common sodium hydroxide-derived soaps. Because of their softness and greater solubility, potassium soaps require less water to liquefy, and can thus contain more cleaning agent than liquefied sodium soaps.

Potassium hydroxide as an electrolyte

Aqueous potassium hydroxide is employed as the electrolyte in alkaline batteries based on nickel-cadmium and manganese dioxide-zinc. Potassium hydroxide is preferred over sodium hydroxide because its solutions are more conductive. Other applications

Other uses for potassium hydroxide

KOH attracts numerous specialized applications, which virtually all rely on its basic or degradation properties. KOH is widely used in the laboratory for the same purposes.

In chemical synthesis, the selection of KOH vs. NaOH is guided by the solubility for the resulting salt. Its corrosive properties make it useful as an ingredient in cleaning and disinfection of resistant surfaces and materials. The high alkalinity enables cleaners and degreasers to dissolve oils and greases by saponifying them. Likewise it is commonly used in commercial oven cleaners where the dissolving of carbon and baked on grease, sugar etc is required.

It is often the main active ingredient in chemical “cuticle removers.”

KOH is also widely used as a way to remove hair from animal hides, leaving the hides in a solution of KOH and water for a few hours. It is used in resomation to dissolve human remains.

Aggressive bases will damage the cuticle of the hair shaft, and thus is useful for weakening the hair in preparation for shaving. Pre-shave products and shave creams such as Proraso contain Potassium Hydroxide in order to force the cuticle open and act as a hygroscopic agent to attract and force water into the shaft, causing further damage to the hair. In this state, the hair is more easily cut by razor blade.

Health & safety

R-phrase(s): R35 Causes severe burns. R22 Harmful if swallowed.

S-phrase(s): S1/2 Keep locked up and out of reach of children. S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 Wear suitable protective clothing, gloves and eye/face protection. S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

See MSDS for Potassium hydroxide for full details

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What is Water Glass and what is it used for ?

sodium silicate solution

Water glass solution

WHAT IS WATER GLASS

Water glass also known as Sodium silicate, is a clear, odourless, viscous liquid. This specific silicate has a molar ratio of 3.22 and a total solids content of 36.8%. It is produced by fusing sand (SiO2) with sodium carbonate which produces solid glass (cullet). The glass is then dissolved in water and steam under high pressure which produces the water glass. It is widely used in industry as sealants, binders, deflocculants, emulsifiers and buffers.

Specification

  • Synonyms: Sodium silicate; Sodium trisilicate solution; Water glass; Silicic acid, sodium salt; sodium hydroxy(oxo)si­lanolate; acide silicique, sel de sodium; Kieselsaure, Natriumsalz;
  • Molar Ratio: 3.22 +/-0.5%
  • SiO2: 27.8% +/-0.5%
  • Na2O: 8.5% +/-0.3%
  • Concentration: 36–37%
  • CAS No: 1344–09–8
  • EC No: 215–687–4
  • Formula: Na2Si3O7
  • Viscosity: 70–100cPs (20C)
  • Density: 1.38 g/cm3 (40 Be)
  • pH: approx 11.3
  • Solubility: completely miscible in water

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Uses for Water glass

Metal repair

Water glass is used, along with magnesium silicate in muffler repair and fitting paste. When dissolved in water, both sodium silicate, and magnesium silicate form a thick paste that is easy to apply. When the exhaust system of an internal combustion engine heats up to its operating temperature, the heat drives out all of the excess water from the paste. The silicate compounds that are left over have glass-like properties, making a somewhat permanent, brittle repair.

Automotive repair

Water glass can be used to seal leaks at the head gasket. Rather than pull the head, a jar of “liquid glass” is poured into the radiator and allowed to circulate. The Waterglass is injected via the radiator water into the hotspot at the motor. This technique works because at 93 C the sodium silicate loses water molecules to form a very powerful sealant that will not re-melt below 815 C. This approach is often used by disreputable used-car salespersons to disguise a leaking head gasket.

A sodium silicate repair of a leaking head gasket can hold for up to two years and even longer in some cases. The effect will be almost instant, and steam from the radiator water will stop coming out the exhaust within minutes of application. This repair only works with water to cylinder or water to Air applications and where the sodium silicate reaches the “conversion” temperature of 93 C.

Cement uses

Water glass has been widely used as a general purpose cement, but especially for applications involving cementing objects exposed to heat or fire. For example, sodium silicate has been provided in home first-aid kits and used in medical practice as a glue for holding human skin together at surface cuts. It has also been used as a general purpose paper cement.

 

Timber treatment

Sodium silicate is used as a timber treatment to preserve wood from insects and possesses some flame-retardant properties.

Concrete and general masonry treatment

Concrete treated with a sodium silicate solution helps to significantly reduce porosity in most masonry products such as concrete, stucco, plasters. A chemical reaction occurs with the excess Ca(OH)2 in the concrete that permanently binds the silicates with the surface making them far more wearable and water repellent. It is generally advised to apply only after initial cure has taken place (7 days or so depending on conditions).

Refractory use

Water glass is a useful binder of solids, such as vermiculite and perlite. When blended with the aforementioned lightweight aggregates, water glass can be used to make hard, high-temperature insulation boards used for refractories, passive fire protection and high temperature insulations, such as moulded pipe insulation applications. When mixed with finely divided mineral powders, such as vermiculite dust (which is common scrap from the exfoliation process), one can produce high temperature adhesives. The intumescence disappears in the presence of finely divided mineral dust, whereby the waterglass becomes a mere matrix. Waterglass is inexpensive and abundantly available, which makes its use popular in many refractory applications.

Water Treatment

Water glass is used as a water treatment in waste water treatment plants. Waterglass will bind to heavier molecules and drag them out of the water.

Magic Crystals

Water glass was used in the magic crystal garden toys from the 1980’s. When waterglass was combined with a selection of different metals in solution, the waterglass would cause the metals to precipitate. Each metal would precipitate separately causing a different color stalagmite.

Sodium silicate in the paper & pulp industry

In the peroxide bleaching process of the Pulp and Paper industry sodium silicate functions as a transition metal ion chelate, a pH buffer, a stabiliser, a surface active agent and penetrant and as a corrosion control agent

Health & safety

Risk phrases: R34 Causes burns. R37 Irritating to respiratory system.

Safety phrases: S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 Wear suitable protective clothing, gloves and eye/face protection. S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

For full details see MSDS for Water glass / sodium silicate

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What is Sodium Silicate solution and what is it used for ?

sodium silicate solution

sodium silicate solution

WHAT IS SODIUM SILICATE

Sodium silicate is a clear, odourless, viscous liquid. This specific silicate has a molar ratio of 3.22 and a total solids content of 36.8%. It is produced by fusing sand (SiO2) with sodium carbonate which produces solid glass (cullet). The glass is then dissolved in water and steam under high pressure which produces the sodium silicate solution also known as water glass. It is widely used in industry as sealants, binders, deflocculants, emulsifiers and buffers.

Specification

  • Synonyms: Sodium trisilicate solution; Water glass; Silicic acid, sodium salt; sodium hydroxy(oxo)si­lanolate; acide silicique, sel de sodium; Kieselsaure, Natriumsalz;
  • Molar Ratio: 3.22 +/-0.5%
  • SiO2: 27.8% +/-0.5%
  • Na2O: 8.5% +/-0.3%
  • Concentration: 36–37%
  • CAS No: 1344–09–8
  • EC No: 215–687–4
  • Formula: Na2Si3O7
  • Viscosity: 70–100cPs (20C)
  • Density: 1.38 g/cm3 (40 Be)
  • pH: approx 11.3
  • Solubility: completely miscible in water

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Uses for sodium silicate

Metal repair

Sodium silicate is used, along with magnesium silicate in muffler repair and fitting paste. When dissolved in water, both sodium silicate, and magnesium silicate form a thick paste that is easy to apply. When the exhaust system of an internal combustion engine heats up to its operating temperature, the heat drives out all of the excess water from the paste. The silicate compounds that are left over have glass-like properties, making a somewhat permanent, brittle repair.

Automotive repair

Sodium silicate can be used to seal leaks at the head gasket. Rather than pull the head, a jar of “liquid glass” is poured into the radiator and allowed to circulate. The Waterglass is injected via the radiator water into the hotspot at the motor. This technique works because at 93 C the sodium silicate loses water molecules to form a very powerful sealant that will not re-melt below 815 C. This approach is often used by disreputable used-car salespersons to disguise a leaking head gasket.

A sodium silicate repair of a leaking head gasket can hold for up to two years and even longer in some cases. The effect will be almost instant, and steam from the radiator water will stop coming out the exhaust within minutes of application. This repair only works with water to cylinder or water to Air applications and where the sodium silicate reaches the “conversion” temperature of 93 C.

Cement uses

Sodium silicate has been widely used as a general purpose cement, but especially for applications involving cementing objects exposed to heat or fire. For example, sodium silicate has been provided in home first-aid kits and used in medical practice as a glue for holding human skin together at surface cuts. It has also been used as a general purpose paper cement.

 

Timber treatment

Sodium silicate is used as a timber treatment to preserve wood from insects and possesses some flame-retardant properties.

Concrete and general masonry treatment

Concrete treated with a sodium silicate solution helps to significantly reduce porosity in most masonry products such as concrete, stucco, plasters. A chemical reaction occurs with the excess Ca(OH)2 in the concrete that permanently binds the silicates with the surface making them far more wearable and water repellent. It is generally advised to apply only after initial cure has taken place (7 days or so depending on conditions).

Refractory use

Water glass is a useful binder of solids, such as vermiculite and perlite. When blended with the aforementioned lightweight aggregates, water glass can be used to make hard, high-temperature insulation boards used for refractories, passive fire protection and high temperature insulations, such as moulded pipe insulation applications. When mixed with finely divided mineral powders, such as vermiculite dust (which is common scrap from the exfoliation process), one can produce high temperature adhesives. The intumescence disappears in the presence of finely divided mineral dust, whereby the waterglass becomes a mere matrix. Waterglass is inexpensive and abundantly available, which makes its use popular in many refractory applications.

Water Treatment

Water glass is used as a water treatment in waste water treatment plants. Waterglass will bind to heavier molecules and drag them out of the water.

Magic Crystals

Water glass was used in the magic crystal garden toys from the 1980’s. When waterglass was combined with a selection of different metals in solution, the waterglass would cause the metals to precipitate. Each metal would precipitate separately causing a different color stalagmite.

Sodium silicate in the paper & pulp industry

In the peroxide bleaching process of the Pulp and Paper industry sodium silicate functions as a transition metal ion chelate, a pH buffer, a stabiliser, a surface active agent and penetrant and as a corrosion control agent

Health & safety

Risk phrases: R34 Causes burns. R37 Irritating to respiratory system.

Safety phrases: S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 Wear suitable protective clothing, gloves and eye/face protection. S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

For full details see MSDS for sodium silicate

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What is Sulfamic Acid and what is it used for ?

WHAT IS SULFAMIC ACID

Sulfamic acid is a white crystalline solid which is stable and non-hygroscopic. It is soluble in water and formamide and slightly soluble in methanol, ether, acetone and concentrated sulphuric acid. It is classified as a strong inorganic acid and is commercially produced from urea and fuming sulphuric acid. At room temperature, dilute aqueous  acid solution is stable for a long time but rapid hydrolysis occurs at elevated temperatures. It’s solution is less corrosive toward metals than other mineral acids like hydrochloric acid.

Sulfamic acid is used as an acidic cleaning agent, typically for metals and ceramics. It is a replacement for hydrochloric acid for the removal of rust. In households, it is often found as a descaling agent in detergents, cleaners and toilet cleaners for the removal of limescale.

Properties of Sulfamic acid

  • Synonyms: suphamic acid; Amidosulfonic acid; Amidosulphonic acid; sulphamidic acid;
  • CAS No: 5329–14–6
  • EINECS No: 226–218–8
  • Appearance: white crystalline solid
  • Minimum quality: 99.8%
  • Molecular formula: NH2SO3H
  • Molar mass: 97.09 g/mol
  • Density: 2.15g/cm3
  • Solubility in water: 213 g/L (20C)
  • Melting point: 190 – 225 C
  • Boiling point: decomposes
  • pH: 1.2 (1% solution @ 20C)
  • Refractive index: 1.553

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USES OF SULfAMIC ACID:

  • Descaler, Cleaner & Rust Remover
  • removing excess grout on tiles, efflorescence and other mineral deposits
  • Cleaner & descaler for Dairy equipment (pipeline milkers, milk evaporators)
  • Cleaner & descaler for Brewery equipment (pipelines, Vats, etc)
  • Catalyst for esterfication process process
  • Used in dye and pigment manufacture
  • Used as a herbicide
  • Effecticve against Foot and Mouth (approved bty Defra)
  • Ingredient in Denture Tablets
  • Coagulator for urea-formaldehyde resins
  • Ingredient in fire extinguishing media
  • Pulp and paper industry as a chloride stabilizer
  • Synthesis of nitrous oxide by reaction with nitric acid

Sulfamic acid in descaling

Sulfamic Acid is super efficient descaling agent and is used for cleaning a variety of industrial equipment and domestic appliances. It is used for cleaning boilers, heat exchangers, condensers, jackets and coils, descaling toilets, removing excess grout on tiles, efflorescence and other mineral deposits etc (See below for details on how to use). It helps remove hard water scale, protein deposits, beer and milk stone, light rust and copper corrosion

Sulfamic acid in paper & pulp Industry

Sulfamic Acid prevents pulp degradation due to temperature at the chlorination and hydrochloride stage. It permits bleaching at higher temperature and lower PH without loss of strength.

Sulfamic acid is used in manufacturing of Dyes, Pigments and in the dyeing of leather

Sulfamic Acid removes excess of nitrides used in the diazotization reactions in the manufacturing of dye stuffs and pigments. Nitrides if present in process water of effluents can also be removed by using Sulphamic Acid

Sulfamic acid in Chlorine Stabilization

Chlorine gas in water form HOCL which reacts with Sulfamic Acid form N-Chloro-Sulphamic Acid to N-ChloroSufamic Acid more stable and yet has active chlorine, Because of this, Sulphamic Acid is used for stabilizing chlorine in swimming pools and cooling towers.

Sulfamic acid in Electroplating and Electro-refining

Metal sulphamate electrolytes values for their high solubility cadmium, cobalt nickle, lead silver and radium sulphamte deposits are bright and dense. Lead sulphamate is used in refining lead when a high quality is desired.

Sulfamic acid in Sulphation and Sulphamation

Sulfamic acid is used for sulphation and sulphamation of many organic compounds. Sulphation of aklyl pheno-ethylen oxide condensation products 9for detergents and sulphation of ethoxylated phenol-formaldehyde resins is preferable with Sulphamic Acid. Stronger agents cause unwanted ring sulphomation.

How to use Sulfamic Acid for cleaning & descaling:

For removing excess grout from tiling or dissolving efflorescence from walls, floors etc: Make up a solution of sulfamic acid by dissolving 80–100g per litre of warm water. Apply to surface using a cloth or brush and allow to work for a few minutes. Agitate with brush if necessary and rinse with clean water. Please Note: if using around coloured grout use a weaker solution of approx 2% (20g per litre of water) to reduce the risk of leaching out any colour from the grout.

For descaling equipment use a 10% solution. Sulfamic acid is safe for steel, iron, glass and wood equipment, and may be used with caution on copper, aluminium, and galvanized metal surfaces. Clean in a soak tank or by circulation. For surfaces, apply to surface using a cloth or brush and allow to work for a few minutes. Agitate with brush if necessary and rinse thoroughly with clean water.

For Boiler systems & Cooling Towers use a circulation treatment of a 10% to 15% solution depending on how bad the system is. Before applying flush out system and refill with clean water. Determine the volume of water and mix in the sulfamic acid at a rate of 100g to 150g per litre of water. Circulate the solution at room temperature or heated to a maximum of 60C for heavier cleaning. Note: Do not use at boiling point or product will undergo hydrolysis and not work. After cleaning rinse thoroughly and check system. Repeat applications may be necessary for heavily soiled systems. After cleaning Periodic flushing of the system to remove loosened scale and contaminants will be necessary.

For rust removal use a solution of 10%-20%.

Health & Safety

R-phrase(s): R36/38 Irritating to eyes and skin. R52/53 Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.

S-phrase(s): S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 After contact with skin, wash immediately with plenty of soap and water. S61 Avoid release to the environment. Refer to special instructions/ Safety data sheets.

See MSDS for Sulfamic acid for full details.

.

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What is Sulphamic Acid and what is it used for ?

WHAT IS SULPHAMIC ACID

Sulphamic acid is a white crystalline solid which is stable and non-hygroscopic. It is soluble in water and formamide and slightly soluble in methanol, ether, acetone and concentrated sulphuric acid. It is classified as a strong inorganic acid and is commercially produced from urea and fuming sulphuric acid. At room temperature, dilute aqueous sulphamic acid solution is stable for a long time but rapid hydrolysis occurs at elevated temperatures. It’s solution is less corrosive toward metals than other mineral acids like hydrochloric acid.

Sulphamic acid is used as an acidic cleaning agent, typically for metals and ceramics. It is a replacement for hydrochloric acid for the removal of rust. In households, it is often found as a descaling agent in detergents, cleaners and toilet cleaners for the removal of limescale.

Properties of Sulphamic acid

  • Synonyms: sulfamic acid; Amidosulfonic acid; Amidosulphonic acid; sulphamidic acid;
  • CAS No: 5329–14–6
  • EINECS No: 226–218–8
  • Appearance: white crystalline solid
  • Minimum quality: 99.8%
  • Molecular formula: NH2SO3H
  • Molar mass: 97.09 g/mol
  • Density: 2.15g/cm3
  • Solubility in water: 213 g/L (20C)
  • Melting point: 190 – 225 C
  • Boiling point: decomposes
  • pH: 1.2 (1% solution @ 20C)
  • Refractive index: 1.553

Where to Buy Sulphamic Acid / Sulfamic Acid online UK

USES OF SULPHAMIC ACID:

  • Descaler, Cleaner & Rust Remover
  • removing excess grout on tiles, efflorescence and other mineral deposits
  • Cleaner & descaler for Dairy equipment (pipeline milkers, milk evaporators)
  • Cleaner & descaler for Brewery equipment (pipelines, Vats, etc)
  • Catalyst for esterfication process process
  • Used in dye and pigment manufacture
  • Used as a herbicide
  • Effecticve against Foot and Mouth (approved bty Defra)
  • Ingredient in Denture Tablets
  • Coagulator for urea-formaldehyde resins
  • Ingredient in fire extinguishing media
  • Pulp and paper industry as a chloride stabilizer
  • Synthesis of nitrous oxide by reaction with nitric acid

Sulphamic acid in descaling

Sulphamic Acid is super efficient descaling agent and is used for cleaning a variety of industrial equipment and domestic appliances. It is used for cleaning boilers, heat exchangers, condensers, jackets and coils, descaling toilets, removing excess grout on tiles, efflorescence and other mineral deposits etc (See below for details on how to use). It helps remove hard water scale, protein deposits, beer and milk stone, light rust and copper corrosion

Sulphamic acid in paper & pulp Industry

Sulphamic Acid prevents pulp degradation due to temperature at the chlorination and hydrochloride stage. It permits bleaching at higher temperature and lower PH without loss of strength.

Sulphamic acid is used in manufacturing of Dyes, Pigments and in the dyeing of leather

Sulphamic Acid removes excess of nitrides used in the diazotization reactions in the manufacturing of dye stuffs and pigments. Nitrides if present in process water of effluents can also be removed by using Sulphamic Acid

Sulphamic acid in Chlorine Stabilization

Chlorine gas in water form HOCL which reacts with Sulphamic Acid form N-Chloro-Sulphamic Acid to N-ChloroSufamic Acid more stable and yet has active chlorine, Because of this, Sulphamic Acid is used for stabilizing chlorine in swimming pools and cooling towers.

Sulphamic acid in Electroplating and Electro-refining

Metal sulphamate electrolytes values for their high solubility cadmium, cobalt nickle, lead silver and radium sulphamte deposits are bright and dense. Lead sulphamate is used in refining lead when a high quality is desired.

Sulphamic acid in Sulphation and Sulphamation

Sulphamic acid is used for sulphation and sulphamation of many organic compounds. Sulphation of aklyl pheno-ethylen oxide condensation products 9for detergents and sulphation of ethoxylated phenol-formaldehyde resins is preferable with Sulphamic Acid. Stronger agents cause unwanted ring sulphomation.

How to use Sulphamic Acid for cleaning & descaling:

For removing excess grout from tiling or dissolving efflorescence from walls, floors etc: Make up a solution of sulphamic acid by dissolving 80–100g per litre of warm water. Apply to surface using a cloth or brush and allow to work for a few minutes. Agitate with brush if necessary and rinse with clean water. Please Note: if using around coloured grout use a weaker solution of approx 2% (20g per litre of water) to reduce the risk of leaching out any colour from the grout.

For descaling equipment use a 10% solution. Sulphamic acid is safe for steel, iron, glass and wood equipment, and may be used with caution on copper, aluminium, and galvanized metal surfaces. Clean in a soak tank or by circulation. For surfaces, apply to surface using a cloth or brush and allow to work for a few minutes. Agitate with brush if necessary and rinse thoroughly with clean water.

For Boiler systems & Cooling Towers use a circulation treatment of a 10% to 15% solution depending on how bad the system is. Before applying flush out system and refill with clean water. Determine the volume of water and mix in the sulphamic acid at a rate of 100g to 150g per litre of water. Circulate the solution at room temperature or heated to a maximum of 60C for heavier cleaning. Note: Do not use at boiling point or product will undergo hydrolysis and not work. After cleaning rinse thoroughly and check system. Repeat applications may be necessary for heavily soiled systems. After cleaning Periodic flushing of the system to remove loosened scale and contaminants will be necessary.

For rust removal use a solution of 10%-20%.

Health & Safety

R-phrase(s): R36/38 Irritating to eyes and skin. R52/53 Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.

S-phrase(s): S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 After contact with skin, wash immediately with plenty of soap and water. S61 Avoid release to the environment. Refer to special instructions/ Safety data sheets.

See MSDS for Sulphamic acid for full details in the documents section above.

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Where to Buy Sulphamic Acid / Sulfamic Acid online UK

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