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383120

Sigma-Aldrich

Sulfamic acid

ACS reagent, 99.3%

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Synonym(s):
Amidosulfonic acid
Linear Formula:
NH2SO3H
CAS Number:
Molecular Weight:
97.09
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

assay

99.3%
99.3-100.3% dry basis (ACS specification)

form

crystals

technique(s)

titration: suitable

impurities

≤0.01% insolubles

ign. residue

≤0.01%

mp

215-225 °C (dec.) (lit.)

solubility

water: 213 g/L at 20 °C

density

2.151 g/cm3 at 25 °C

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.05%

cation traces

Fe: ≤5 ppm
heavy metals (as Pb): ≤0.001%

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)

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1 of 4

This Item
242780242772481505
vibrant-m

383120

Sulfamic acid

vibrant-m

242780

Sulfamic acid

vibrant-m

242772

Sulfamic acid

vibrant-m

481505

Sulfamic acid

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

100

grade

ACS reagent

grade

reagent grade

grade

-

grade

-

impurities

≤0.01% insolubles

impurities

-

impurities

-

impurities

-

density

2.151 g/cm3 at 25 °C

density

2.151 g/cm3 at 25 °C

density

2.151 g/cm3 at 25 °C

density

2.151 g/cm3 at 25 °C

cation traces

Fe: ≤5 ppm, heavy metals (as Pb): ≤0.001%

cation traces

-

cation traces

-

cation traces

Fe: ≤5 ppm, heavy metals (as Pb): ≤0.001%

General description

Sulfamic acid (H2NSO3H) is widely used inorganic compound. It exists in zwitterionic form and neutral forms. Zwitterionic form has been reported to be is more stable than neutral form. Its industrial applications have been reported. It has various organic synthesis applications.
Sulfamic acid is a strong inorganic acid. It is a hypochlorite scavenger. The ability of sulfamic acid to reduce nitrate to nitrogen gas under acidic condition has been utilized to denitrify nitrate-rich wastewater along with zinc powder.

Application

Sulfamic acid (H2NSO3H) may be used in the following studies:
  • As catalyst in the synthesis of aryl-14H-dibenzo[a.j]xanthenes.
  • As green catalyst for the preparation of amide from ketoxime.
  • As ammonia equivalent in the regioselective synthesis of primary allylic amines, via allylic substitution reactions.
  • Synthesis of polysubstituted quinolones.
Sulfamic acid may be used in the following processes:
  • As a titrant in the determination of the burette injection volume and chemical calibration factor.
  • To neutralize excess nitrous acid in the colorimetric paracetamol assay by modified Glynn and Kendal colorimetric method.
  • To prevent endogenous mercury (Hg) loss during the urine Hg measurement by inductively coupled plasma mass spectrometry (ICP-MS) method.
  • As an acid catalyst and a hypochlorite scavenger in the chlorite oxidation of dialdehyde cellulose (DAC).
  • As a heterogeneous catalyst in the synthesis of polyhydroquinoline derivatives by Hantzsch condensation reaction.
  • As catalyst in the degradation of bamboo fiber to 5-hydroxymethylfurfural (HMF).
  • As an acid reagent in the determination of silicates in water samples based on centrifugal microfluidics.
  • As catalyst in the synthesis of deazaoxaflavin at room temperature.

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

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

Storage Class

8B - Non-combustible, corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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