SULFAMIC ACID 99%, kg

Parameter	Attribute
Sulfamic acid	Amidosulfonic acid, amidosulfitic acid, sulphamic acid
Formula	H3NSO3
Structure
IUPAC	Sulfamic acid
INCI	SULFAMIC ACID
CAS	5329-14-6
Molar mass	97,10 g/mol
Density	2,15 g/cm3
Solubility	In water: 12.80% - 0 °C; 17.57% - 20 °C; 22.77% - 40 °C; 0.1667% in formamide 25 °C; 0.0412% in methanol 25 °C; 0.0167% in ethanol (2% benzene) prie 25 °C; 0.0040% in acetone 25 °C; 0.0001% in ether 25 °C

Sulfamic acid, also known as amidosulfonic acid or sulfamic acid, with the formula NH₂SO₃H, is a white crystalline powder which is non-hygroscopic. Sulfamic acid is soluble in water and formamide, with low solubility in methanol, ether, acetone and concentrated sulfuric acid. It is stable at room temperature for a long time, but at higher temperatures strong hydrolysis starts in solution. Sulfamic acid solutions cause less corrosion on metal surfaces compared to mineral acids, e.g. Sulfuric acids are less acidic than hydrochloric or sulfuric acids.

In the cleaning industry, sulfamic acid is used as a very effective descaling agent in both industrial and domestic cleaning. It is commonly used for descaling heating boilers, heat exchangers, sanitary surfaces and toilets. It helps to remove hard water scale, protein residues, beer scale, milk scale, rust and copper scale. Sulfamic acid is not effective against silicate and calcium phosphate deposits. This acid forms soluble salts of calcium and iron ions, is low in toxicity, low in harmfulness and is therefore often used in the food industry. It is used for descaling and cleaning coffee and espresso machines.

When used as a construction residue remover to remove sealant from tile floors or joints, a solution of 8-10% (80-100g per liter of water) is made and applied to the surface with a cloth or brush and left for a few minutes. If necessary, rub with a brush and wipe/rinse with clean water. If cleaning around colored mortar or putty, it is recommended to use a weaker solution of about 2% (20g per liter of water) to reduce the risk of color fading.

When used as a decalcifier, a 10% solution is used. Sulfamic acid is safe to use on steel, iron, glass and wood surfaces, and can be used with caution on copper, aluminium or galvanized surfaces. Corrosion inhibitors are commonly used in addition to sulfamic acid-based products. Cleaning can be done either by soaking or by circulation. The prepared solution is applied to the surface with a cloth or brush and left for a few minutes. If necessary, rub with a brush and wipe/rinse with clean water.

For use as a descaler in heating systems, a 10-15% circulating solution is made. It is recommended to drain the coolant and fill the system with clean water before flushing. Circulation is carried out with water at room temperature or up to 60°C for a stronger cleaning effect. It is important not to overheat, as the sulfamic acid will then hydrolyze and cease to function. Repeated flushing may be necessary if the system is heavily fouled. After cleaning, a flushing of the system is necessary to remove residual lime scale. A 10-20% solution shall be used for rust removal.

In the metalworking industry, sulfamic acid is used to extract metal sulfamates, which are highly soluble in electrolytes. Sulfamates of cadmium, cobalt, nickel, lead, silver and radium are bright and dense. Lead sulfamate is used in lead purification where particularly high lead purity is required. Sulfamic acid in the ionic state is used to form nickel coatings.

In the paper industry, sulfamic acid inhibits the hardening of paper by temperature rise through chlorination and hydrochloric acid treatment. It inhibits fading of paper at higher temperatures and at lower pH without loss of strength.

In horticulture, sulfamic acid and its salts are used as a herbicide to control the growth of unwanted herbs/plants such as Japanese knapweed (Fallopia japonica), Equisetum (Equisetum), Aegopodium (Aegopodium podagraria), Rhododendron (Rhododendron ponticum), Hedera (Hedge ivy), Senecio (Senecio), Armillaria (Stumpweed), and others.

In the food industry, sulfamic acid is used as a catalyst in the production of sweeteners, such as It is used as a sweetening agent in the production of sweeteners such as cyclamates, acefulfam compounds, etc.

Other uses: constituent in quenching liquids, catalyst in esterification processes, coagulant in formaldehyde rubbers, in the production of nitric oxide by reaction with nitric acid, in the manufacture of pharmaceuticals, in the production of enzymes and in the neutralization of chlorinated cleaners.

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