• Product Name: Sulfamic Acid Industrial Grade
  • Synonyms: Aminosulfonic Acid
  • Appearance: White crystalline powder
  • CAS No: 5329-14-6
  • HS Code: 2811199090
  • Molecular Formula: H2NSO3H

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. 

ItemStandard (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
PackingPlastic 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%

  • Cleaning Agent. As an acid cleaning agent, sulfamic acid can be used for boiler descaling, metal and ceramic equipment and food industry equipment. Descaling agent for heat exchangers, coolers and engine water cooling systems, etc.
  • Papermaking industry. As a bleaching aid, sulphamic acid can reduce or eliminate the catalytic effect of heavy metal ions in the bleaching liquid, thereby ensuring the quality of the bleaching liquid, and can reduce the oxidative degradation of metal ions on fibers, and can also prevent the peeling reaction of fibers, thereby improving the strength and whiteness of pulp.
  • Textile Industry. Sulfamic acid can be used to make dyes, pigments and leather dyeing. In the dye industry, it is used as a remover of excess nitrite in diazotization reaction and a color fixer for textile dyeing. It can form a fireproof layer on textiles; it can also be used to make yarn purifiers and other auxiliaries in the textile industry
  • Petroleum Industry. Aminosulfonic acid can be used to remove blockages in oil layers and increase the permeability of oil layers. Injecting sulfamic acid solution into carbonate oil-producing layers can avoid the deposition of salt generated by the reaction because sulphamic acid easily reacts with the oil layer rocks. The treatment cost is slightly higher than that of using hydrochloric acid, but the oil production doubles.
  • lectroplating Industrial Agent. Using sulphamic acid in gold plating, copper plating or alloy plating can make the plating layer fine, ductile and highly viscous, and obtain a very bright silver plating surface; it is also used to prepare aminosulfonic acid nickel and used in low-stress aminosulfonic acid nickel electroplating to improve the electroplating quality and shorten the cycle.
  • Electrochemical Polishing Agent. Used as an electrochemical polishing agent for titanium alloys and rhodium-rhenium alloys, sulfamic acid can increase the brightness of the alloy surface and thus be used for surface treatment in the aerospace and military fields.
  • Sulfonating Agent. When used as a sulfonating agent to produce fatty acid polyoxyethylene ether sodium sulfate, the equipment is less corrosive, the reaction is mild, easy to control, the color is pure and the quality is high.
  • Food Additives. In the food industry, aminosulfonic acid can be used as a raw material for producing sweeteners such as acesulfame potassium and cyclamate, and is a food and beverage additive.
  • Resin Industry. Aminosulfonic acid is a catalyst for the synthesis of urea-formaldehyde resin and a curing agent for resin in the resin industry.
  • Agriculture. Used as a pesticide intermediate to produce herbicides, and as an anti-blight agent for trees or shrubs.
  • Aquaculture. It can degrade nitrite in aquaculture water, reduce the pH value of aquaculture water, improve aquaculture water safely, simply and efficiently, and has no toxic side effects on aquaculture animals. The reaction process is friendly to the ecological environment and has no harmful residues.

Why Choose Fengbai 

  • A leading supplier and exporter of sulfamic acid in China.
  • Stable supply & fast delivery.
  • Free samples for testing.
  • Various packaging to meet customers’ requirements.
  • ISO quality, good service and competitive prices.
  • Good cooperation with cargo agents and shipping companies.

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