Sulfamic acid
CAS 5329-14-6
EC 226-218-8
Formula H3NO3S
MW 97.09 g/mol
Inorganic Acids Water TreatmentMining & MetalsTextile, Leather & Paper Cleaning & DegreasingpH Regulation & BufferingCorrosion Inhibition
Description
Sulfamic acid (CAS 5329-14-6, EC 226-218-8, formula H3NO3S) is an inorganic acid also known as sulphamic acid, sulfamidic acid, and sulfaminic acid. It carries no E-code designation and is classified under HS code 28111980. It is commercially available as a white crystalline solid or crystalline powder.
In water treatment, sulfamic acid removes calcium carbonate and rust scale from boilers, heat exchangers, and cooling systems by reacting directly with mineral deposits to form soluble salts. In textile and paper processing, it functions as a pH buffer and controlled acidifying agent during dyeing and bleaching operations, where stable acidity is critical to process consistency.
Sulfamic acid is supplied in technical and industrial grades as crystalline powder or granules, with packaging typically ranging from 25 kg bags to bulk quantities. It is subject to REACH registration requirements within the EU. Buyers should confirm grade specifications and purity certificates with the supplier prior to procurement.
In water treatment, sulfamic acid removes calcium carbonate and rust scale from boilers, heat exchangers, and cooling systems by reacting directly with mineral deposits to form soluble salts. In textile and paper processing, it functions as a pH buffer and controlled acidifying agent during dyeing and bleaching operations, where stable acidity is critical to process consistency.
Sulfamic acid is supplied in technical and industrial grades as crystalline powder or granules, with packaging typically ranging from 25 kg bags to bulk quantities. It is subject to REACH registration requirements within the EU. Buyers should confirm grade specifications and purity certificates with the supplier prior to procurement.
Physical Properties
| Melting Point | 205 °C |
| Boiling Point | -520.47°C (estimate) |
| Density | 2.15 g/cm³ |
| Appearance | Sulfamic acid is a white crystalline solid. |
| Color | White |
| Odor | odorless |
| Form | Crystals or Crystalline Powder |
| Water Solubility | 146.8 g/L (20 ºC) |
| Vapor Pressure | 0.8Pa at 20℃ |
| Refractive Index | 1.553 |
| pH | 1.2 (10g/l, H2O) |
| Log P | 0 at 20℃ |
Safety & Handling (Learn More)
Warning GHS07 GHS08
H
H315H319H372H412
P
P260P264P270P273P280P319P321P501P264+P265P302+P352P332+P317P337+P317P362+P364P305+P351+P338
Trade & Regulatory
| HS Code | 28111980 |
| UN Number | 2967 |
| ADR Class | 8 |
| Packing Group | III |
| Storage Class | 8A - Combustible corrosive hazardous materials |
| WGK (Germany) | 1 |
Other Names
[S(NH2)O2(OH)]sulphamic acidJumboACETO ACIDSulfaminic acid
Related Products
Raw Materials
Derivatives
Need a chemical? Get a quote within 24 hours.