What is Sulfamic Acid
Sulfamic acid, also known as aminosulfonic acid or thioaminosulfonic acid, is colorless crystals or white powder with a strong pungent odor. The chemical formula is NH₂SO₃H. It is soluble in water, alcohols and other solvents. And this chemical has a high melting point and is solid at room temperature. In addition, sulphamic acid has low volatility, which helps reduce environmental pollution. Since the aqueous solution of sulfamic acid has the same strong acidity as hydrochloric acid, sulfuric acid, etc., it is also called “solid sulfuric acid.
In chemical reactions, sulphamic acid can react with other substances in acid-base neutralization, esterification, sulfonation and other reactions. In addition, sulfamic acid is also reducing and can participate in redox reactions. However, under high temperature or strong alkaline conditions, aminosulfonic acid may decompose or hydrolyze, so care should be taken when using it. Of course, As an important chemical raw material, aminosulfonic acid has a wide range of applications in many fields, such as chemical industry, textile industry, papermaking industry, petroleum industry, medicine, electroplating, metal surface treatment, etc.
| Item | Standard （HG/T2527-2011） |
|---|---|
| Purity % | ≥99 |
| Sulphate % | ≤0.2 |
| Fe, ppm | ≤50 |
| Water insoluble substance % | ≤0.05 |
| Loss on Drying | ≤0.1 |
| Heavy metal (Pb), ppm | ≤10 |
| Packing | Plastic woven sack with inner polythene film, N.W:25kg. G.W:25.1kg. 27MT/20’ FCL, if on pallets 25MT/20’ FCL. UN NO.: 2967 |
Applications of Sulphamic Acid 99.5%
Due to its unique physical and chemical properties, sulfamic acid has been widely used in many industrial fields. From plating improvers in the electroplating industry to dye stabilizers and dyeing aids in the textile industry; from reagents in chemical analysis to synthetic raw materials for pharmaceutical intermediates, aminosulfonic acid plays an irreplaceable role. Its wide range of applications reflects its important industrial value and market demand.
(1) Stable physical properties. Aminosulfonic acid (NH₂SO₃H) is a compound with relatively stable physical properties at room temperature. It exists in the form of white or slightly yellow crystalline powder, has a good crystal structure and low volatility, can maintain its properties and form for a long time under normal storage conditions, and is not prone to spontaneous decomposition or deterioration.
(2) Strong acidity. Aminosulfonic acid is an organic acid of medium strength. Its aqueous solution shows obvious acidity, with a pH value far below 7. This strong acidity enables aminosulfonic acid to act as an acid catalyst or reaction medium and participate in a variety of chemical reactions that require acidic conditions. At the same time, it is also often used as a pickling agent in industrial processes such as electroplating and cleaning to effectively remove oxides and dirt on metal surfaces.
(3) Low toxicity. Compared with other strong acids, sulfamic acid is relatively low in toxicity. Although its aqueous solution is corrosive and can irritate the skin and eyes, correct operation and wearing appropriate protective equipment can significantly reduce the harm to the human body. In addition, aminosulfonic acid has relatively little residue and accumulation in the environment, and has little direct toxic effect on the ecosystem.
(4) Decomposition characteristics. Sulphamic acid will decompose under certain conditions. For example, in the presence of high temperature or strong oxidants, aminosulfonic acid may decompose to produce toxic gases such as sulfur dioxide and nitrogen oxides. Therefore, high temperatures and contact with strong oxidants should be avoided during storage and use to prevent accidental decomposition and dangerous situations.
(5) Hydrolysis. The stability of sulfamic acid in water is affected by temperature. When the temperature exceeds 60 degrees, aminosulfonic acid will gradually undergo hydrolysis to produce sulfate and other products. This hydrolysis limits the application of aminosulfonic acid in high temperature environments, and appropriate measures need to be taken to prevent its hydrolysis or choose other substitutes.
(6) Strong reactivity. The sulfamic acid has strong reactivity and can participate in a variety of chemical reactions. Its strong acidity and specific functional groups make it a precursor of acid catalysts, reducing agents or oxidizing agents, playing a key role in a variety of synthesis and transformation processes. In addition, aminosulfonic acid can also form stable complexes with a variety of metal ions, thereby showing excellent performance in electroplating and chemica analysis.