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Merck
CN

242780

Sulfamic acid

reagent grade, 98%

Synonym(s):

Amidosulfonic acid

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About This Item

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

Key Documents

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Product Name

Sulfamic acid, reagent grade, 98%

InChI key

IIACRCGMVDHOTQ-UHFFFAOYSA-N

InChI

1S/H3NO3S/c1-5(2,3)4/h(H3,1,2,3,4)

SMILES string

NS(O)(=O)=O

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

Quality Level

100

Gene Information

human ... CA1(759), CA2(760)

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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.

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.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Aquatic Chronic 3 - Eye Irrit. 2 - Skin Irrit. 2

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCP1408
BCCM9152
BCCM4395
BCCL5302
BCCK2462

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Denitrification of simulated nitrate-rich wastewater using sulfamic acid and zinc scrap.
Jang JH, et al.
Chemical Papers, 65(4), 437-446 (2011)
Sulfamic acid: a novel and efficient catalyst for the synthesis of aryl-14H-dibenzo [a. j] xanthenes under conventional heating and microwave irradiation.
Rajitha B, et al.
Tetrahedron Letters, 46(50), 8691-8693 (2005)
Solvent effects. 2. Medium effect on the structure, energy, charge density, and vibrational frequencies of sulfamic acid.
Wong MW, et al.
Journal of the American Chemical Society, 114(2), 523-529 (1992)
Sulfamic acid: an efficient, cost-effective and recyclable solid acid catalyst for the Friedlander quinoline synthesis.
Yadav JS, et al.
Tetrahedron Letters, 46(42, 7249-7253 (2005)
Sulfamic acid as a cost-effective and recyclable catalyst for liquid Beckmann rearrangement, a green process to produce amides from ketoximes without waste.
Wang B, et al.
Tetrahedron Letters, 45(17), 3369-3372 (2004)
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