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213330

Sigma-Aldrich

Ammonium chloride

ACS reagent, ≥99.5%

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Synonym(s):
Salmiac
Linear Formula:
NH4Cl
CAS Number:
Molecular Weight:
53.49
Beilstein/REAXYS Number:
4371014
EC Number:
MDL number:
eCl@ss:
38050207
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

agency

suitable for SM 5210

vapor density

1.9 (vs air)

vapor pressure

1 mmHg ( 160.4 °C)

assay

≥99.5%

form

powder, crystals or chunks

impurities

≤0.005% insolubles

ign. residue

≤0.01%

pH

4.5-5.5 (25 °C, 5%)

mp

340 °C (subl.) (lit.)

anion traces

phosphate (PO43-): ≤2 ppm
sulfate (SO42-): ≤0.002%

cation traces

Ca: ≤0.001%
Fe: ≤2 ppm
Mg: ≤5 ppm
heavy metals: ≤5 ppm (by ICP)

SMILES string

N.Cl

InChI

1S/ClH.H3N/h1H;1H3

InChI key

NLXLAEXVIDQMFP-UHFFFAOYSA-N

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1 of 4

This Item
31107326372A9434
vibrant-m

213330

Ammonium chloride

-
vibrant-m

31107

Ammonium chloride

Essential Grade
vibrant-m

326372

Ammonium chloride

-
vibrant-m

A9434

Ammonium chloride

-
assay

≥99.5%

assay

≥99.5%

assay

99.99% trace metals basis

assay

≥99.5%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

grade

ACS reagent

grade

ACS reagent, puriss. p.a.

grade

-

grade

for molecular biology

pH

4.5-5.5 (25 °C, 5%)

pH

4.5-5.5 (20 °C, 5%)

pH

-

pH

-

vapor pressure

1 mmHg ( 160.4 °C)

vapor pressure

1 mmHg ( 160.4 °C)

vapor pressure

1 mmHg ( 160.4 °C)

vapor pressure

1 mmHg ( 160.4 °C)

General description

Crystals of ammonium chloride (NH4Cl) belong to the cubic crystal system. It can be synthesized by reacting HCl with aqueous ammonia solutions. NH4Cl is formed as a by-product during soda manufactured by Solvay process.

Application

Ammonium chloride (NH4Cl) has been used as one of the components of red blood cell (RBC) lysis buffer for use in various studies. It may be used as a catalyst in the preparation 3,4-dihydropyrimidin-2-(1H)-ones.
Inorganic ammonium ions (NH4+) effectively catalyze the aldol condensation of carbonyl compounds. It serves as a source of nitrogen during the preparation of trimethylamine hydrochloride (TMA·HCl).

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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