Ammonium chloride
IUPAC name	Ammonium chloride
Other names	Sal ammoniac, Salmiac, Nushadir salt, Sal armagnac, Salt armoniack, Salmiak
Identifiers
CAS number	12125-02-9
PubChem	25517
EC number	235-186-4
KEGG	D01139
ChEBI	CHEBI:31206
RTECS number	BP4550000
SMILES	[Cl-].[NH4+]
InChI InChI=1/ClH.H3N/h1H;1H3
Properties
Molecular formula	H4ClN
Molar mass	53.49 g mol-1
Appearance	White solid, hygroscopic
Odor	Odorless
Density	1.519 g/cm3
Melting point	338 °C, 611 K, 640 °F
Boiling point
Sublimation conditions	Sublimes at 337.6 °C ΔsublHo = 176.1 kJ/mol
Solubility in water	244 g/L (−15 °C) 294 g/L (0 °C) 383.0 g/L (25 °C) 454.4 g/L (40 °C) 740.8 g/L (100 °C)
Solubility product (Ksp)	30.9 (395 g/L)
Solubility	Soluble in liquid ammonia, hydrazine, Slightly soluble in acetone Insoluble in diethyl ether, ethyl acetate
Solubility in methanol	32 g/kg (17 °C) 33.5 g/kg (19 °C) 35.4 g/kg (25 °C)
Solubility in ethanol	6 g/L (19 °C)
Solubility in glycerol	97 g/kg
Solubility in sulfur dioxide	0.09 g/kg (0 °C) 0.031 g/kg (25 °C)
Solubility in acetic acid	0.67 g/kg (16.6 °C)
Vapor pressure	133.3 Pa (160.4 °C) 6.5 kPa (250 °C) 33.5 kPa (300 °C)
Acidity (pKa)	9.24
Magnetic susceptibility (χ)	-36.7·10−6 cm3/mol
Refractive index (nD)	1.642 (20 °C)
Structure
Crystal structure	CsCl, cP2
Space group	Pm3m, No. 221
Lattice constant	a = 0.3876 nm
Thermochemistry
Std enthalpy of formation ΔfHo298	−314.43 kJ/mol
Standard molar entropy So298	94.56 J/mol·K
Specific heat capacity, C	84.1 J/mol·K
Pharmacology
ATC code
Hazards
NFPA 704	0 2 0
Flash point	Non-flammable
U.S. Permissible exposure limit (PEL)	none
Related compounds
Other anions	Ammonium fluoride Ammonium bromide Ammonium iodide
Other cations	Sodium chloride Potassium chloride Hydroxylammonium chloride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Ammonium chloride is a chemical compound composed of ammonium and chloride ions. It is a colorless crystalline compound. It is used in soldering. It is also used as an electrolyte in the Leclanche cell, a type of primary cell. Ammonium chloride can be deprotonated by strong bases such as sodium hydroxide to produce ammonia gas.It is sublime compound. view more...