242780

Sulfamic acid

reagent grade, 98%

• Synonym(s): Amidosulfonic acid
• Linear Formula: NH₂SO₃H
• CAS Number: 5329-14-6
• Molecular Weight: 97.09
• EC Number: 226-218-8
• MDL number: MFCD00011603
• UNSPSC Code: 12352106
• PubChem Substance ID: 329752620
• NACRES: NA.21

Properties

• grade: reagent grade
• Assay: 98%
• form: powder or crystals
• mp: 215-225 °C (dec.) (lit.)
• solubility: water: 213 g/L at 20 °C; water: 470 g/L at 80 °C
• density: 2.151 g/cm³ at 25 °C
• SMILES string: NS(O)(=O)=O
• InChI: 1S/H3NO3S/c1-5(2,3)4/h(H3,1,2,3,4)
• InChI key: IIACRCGMVDHOTQ-UHFFFAOYSA-N
• Gene Information: human ... CA1(759) , CA2(760)

Description

General description

Sulfamic acid (H₂NSO₃H) is a strong inorganic acid. It exists in zwitterionic form and neutral forms. Zwitterionic form is more stable than neutral form.

The ability of sulfamic acid/zinc powder to reduce nitrate to nitrogen gas under acidic condition has been utilized to denitrify nitrate-rich wastewater.

Application

Sulfamic acid (H₂NSO₃H) may be used in the following studies:

• As a catalyst in the synthesis of aryl-14H-dibenzo[a.j]xanthenes.
• As a green catalyst for the liquid Beckmann rearrangement of ketoxime in dried acetonitrile.
• As a nitrogen source as well as an in situ activator of hydroxy groups in the direct iridium-catalyzed synthesis of primary allylic amines from allylic alcohols.
• Synthesis of polysubstituted quinolones.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H319,H412
• Precautionary Statements: P264 - P273 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313
• Hazard Classifications: Aquatic Chronic 3 - Eye Irrit. 2 - Skin Irrit. 2
• Storage Class Code: 8B - Non-combustible corrosive hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable