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31107

Sigma-Aldrich

Ammonium chloride

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5%

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:
12352300
eCl@ss:
38050207
PubChem Substance ID:
329753648
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

vapor density

1.9 (vs air)

vapor pressure

1 mmHg ( 160.4 °C)

Assay

≥99.5%

form

crystalline powder

pH

4.5-5.5 (20 °C, 5%)

mp

340 °C (subl.) (lit.)

anion traces

nitrate (NO3-): ≤5 mg/kg
phosphate (PO43-): ≤2 mg/kg
sulfate (SO42-): ≤20 mg/kg

cation traces

As: ≤0.5 mg/kg
Ca: ≤5 mg/kg
Cu: ≤2 mg/kg
Fe: ≤2 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Zn: ≤2 mg/kg
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

N.Cl

InChI

1S/ClH.H3N/h1H;1H3

InChI key

NLXLAEXVIDQMFP-UHFFFAOYSA-N

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Application

Ammonium chloride can be used as a catalyst:
  • To synthesize 3,4-dihydropyrimidin-2-(1H)-ones via solvent-free Biginelli-condensation reaction.
  • For the aldol condensation of carbonyl compounds.
  • In the thia-Michael addition reaction of thiols to different α-enones.
It can also be used as:
  • A promoter in the enantioselective hydrogenation of an unprotected β-enamine amides.
  • A pH-adjuster in the preparation of waterborne glucose silicone resin.

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

31107-6X1KG:
31107-1KG:
31107-VAR:
31107-50KG-H:
31107-2.5KG:
31107-500G:4548173348926
31107-6X2.5KG:
31107-25KG-H:
31107-BULK:
31107-6X500G:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Physical and mechanical properties of poplar wood modified by glucose-urea-melamine resin/sodium silicate compound
Liu Q, et al.
Forests, 12, 127-127 (2021)
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)
Identification of ammonium chloride as an effective promoter of the asymmetric hydrogenation of a beta-enamine amide
Clausen A, et al.
Organic Process Research & Development, 10, 723-726 (2006)
Neutron diffraction study of the crystal structure of ammonium chloride.
Levy, Henri A., and S. W. Peterson.
Physical Review, 86(5), 766-766 (1952)
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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