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383120

Sulfamic acid

Name: Sulfamic acid
Brand: SIGALD

ACS reagent, 99.3%

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:

329755668

UNSPSC Code:

12352106

EC Number:

226-218-8

MDL number:

MFCD00011603

Assay:

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

Form:

crystals

Grade:

ACS reagent

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Properties

grade

ACS reagent

Quality Segment

200

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%

pH

1.5 (20 °C, 10 g/L)

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 (SO₄^2-): ≤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)

Description

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.

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pictograms

GHS07

signalword

Warning

hcodes

H315,H319,H412

pcodes

P264 - P273 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313

Hazard Classifications

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

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c