Sulfamic acid
Sulfamic acid (CAS 5329-14-6, NH2SO3H) is a robust inorganic acid with a molecular weight of 97.09 g/mol. It exists as a white crystalline solid and is known for its strong acidic properties while being less corrosive than many other mineral acids. It finds extensive use as a cleaning agent, in industrial processes for descaling and rust removal, and as a reagent in chemical synthesis. Its solid form makes it convenient for handling and transportation.
- IUPAC
- Amidosulfonic acid
- Synonyms
- Amidosulfonic acidAcide sulfamiqueSulfamic acid, 99%

Industrial Cleaning and Descaling
Sulfamic acid is highly effective at removing rust, scale, and lime deposits from metal surfaces, boilers, and heat exchangers. Its solid form allows for easy application in cleaning formulations.
Chemical Synthesis
It serves as a versatile reagent in organic and inorganic synthesis, acting as a source of the sulfamate group or as a mild sulfonating agent in various chemical reactions.
Electroplating and Metal Finishing
Used in the preparation of metal surfaces and in electroplating baths to improve the quality and adhesion of metal coatings.
Dye and Pigment Manufacturing
Acts as a diazotizing agent or a catalyst in the production of certain dyes and pigments.
| Molecular weight | 97.09 |
|---|---|
| Linear formula | NH2SO3H |
| Assay | 99.3%99.3-100.3% dry basis (ACS specification) |
| Grade | ACS reagent |
| Impurities tested | ≤0.01% insolubles |
| Melting point | 215-225 °C (dec.)(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H412Harmful to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 2967 8 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/38-52/53 |
| Safety statements (S) | 26-28-61 |
| Cation traces | Fe: ≤5 ppmheavy metals (as Pb): ≤0.001% |
| Anion traces | chloride (Cl-): ≤0.001%sulfate (SO42-): ≤0.05% |
| Ignition residue | ≤0.01% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | human ... CA1(759), CA2(760) |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sulfamic Acid used for?
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Sulfamic acid is primarily used as an industrial cleaning agent for descaling, rust removal, and in various chemical synthesis applications.
What is the CAS number and chemical formula for Sulfamic Acid?
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The CAS number for Sulfamic Acid is 5329-14-6, and its chemical formula is NH2SO3H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sulfamic Acid in ACS reagent grade, with an assay of 99.3% (99.3-100.3% dry basis, ACS specification). It contains ≤0.01% insolubles. We do not represent it as USP, BP, or EP grade.
What are the safety and handling precautions for Sulfamic Acid?
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Sulfamic acid is a Warning substance that causes skin irritation (H315) and serious eye irritation (H319), and is harmful to aquatic life with long-lasting effects (H412). Wear appropriate personal protective equipment, including eyeshields, face shields, gloves, and a P2/N95 dust mask. Ensure adequate ventilation and avoid release to the environment. In case of eye contact, rinse cautiously with water for several minutes (P305 + P351 + P338).
How is Sulfamic Acid packed, shipped, and exported?
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Sulfamic acid is typically packed in UN 2967 approved containers, PGIII. Tech Serve Solutions is a global supplier and exporter of fine chemicals, capable of handling international shipments according to regulatory requirements.
How can I request a sample or a quote for Sulfamic Acid?
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To request a sample or a quote for Sulfamic Acid, please contact our sales department through the website or by phone, providing your specific requirements.
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