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Sigma-Aldrich

Ammonium chloride

99.99% trace metals basis

Synonym(s):

Salmiac

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About This Item

Linear Formula:
NH4Cl
CAS Number:
12125-02-9
Molecular Weight:
53.49
Beilstein:
4371014
EC Number:
235-186-4
MDL number:
MFCD00011420
UNSPSC Code:
12352302
eCl@ss:
38050207
PubChem Substance ID:
24859583
NACRES:
NA.23

vapor density

1.9 (vs air)

Quality Level

200

vapor pressure

1 mmHg ( 160.4 °C)

Assay

99.99% trace metals basis

form

crystalline

impurities

≤150.0 ppm Trace Metal Analysis

mp

340 °C (subl.) (lit.)

SMILES string

N.Cl

InChI

1S/ClH.H3N/h1H;1H3

InChI key

NLXLAEXVIDQMFP-UHFFFAOYSA-N

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General description

NH4Cl is highly corrosive, colorless salt which dissolves readily in water. It crystallizes out of aqueous solution in octahedrons, in a feathery array, forming a fibrous mass of crystals. It sublimes at 340oC. Ammonium chloride acts as catalyst in one-pot,Biginelli condensation reactions of aldehydes, 1,3-dicarbonyl compounds and urea or thiourea. Inorganic ammonium ions, NH4+, have been reported as efficient catalysts for the aldol condensation of carbonyl compounds.NH4Cl has been reportedly used to enhance the hydrolysis rate and decrease the activation energy of magnesium hydride during hydrogen generation.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Hydrogen generation by hydrolysis of MgH2 and enhanced kinetics performance of ammonium chloride introducing
Huang M, et al.
International Journal of Hydrogen Energy, 40(18), 6145-6150 (2015)
Wiberg E, Wiberg N et al.
Inorganic Chemistry, 614-614 (2001)
Ammonium chloride-catalyzed one-pot synthesis of 3,4-dihydropyrimidin-2-(1H)-ones under solvent-free conditions.
Shaabani A, et al.
Tetrahedron Letters, 44(4), 857-859 (2003)
Ammonium chloride-catalyzed one-pot synthesis of 3,4-dihydropyrimidin-2-(1H)-ones under solvent-free conditions
Shaabani A, et al
Tetrahedron Letters, 44, 857-859 (2003)
Barbara Nozière et al.
Physical chemistry chemical physics : PCCP, 12(15), 3864-3872 (2010-04-02)
In natural environments such as atmospheric aerosols, organic compounds coexist with inorganic salts but, until recently, were not thought to interact chemically. We have recently shown that inorganic ammonium ions, NH(4)(+), act as catalysts for acetal formation from glyoxal, a
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