Ammonium Chloride

Ammonium chloride

Names
IUPAC name Ammonium chloride
Other names Sal ammoniac, Salmiac, Nushadir salt, Sal armagnac, Salt armoniack, Salmiak
Identifiers
[show]

Properties
Chemical formula	ClH4N
Molar mass	53.49 g·mol−1
Appearance	White solid, hygroscopic
Odor	Odorless
Density	1.519 g/cm3[1]
Melting point	338 Â°C (640 Â°F; 611 K) decomposes, sublimes[1]
Boiling point	520 Â°C (968 Â°F; 793 K)
Sublimation conditions	Sublimes at 337.6 Â°C[2] ΔsublHo = 176.1 kJ/mol[3]
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)[4]
Solubility product(Ksp)	30.9 (395 g/L)[5]
Solubility	Soluble in liquid ammonia, hydrazine,  Slightly soluble in acetone Insoluble in diethyl ether, ethyl acetate[2]
Solubility in methanol	32 g/kg (17 °C) 33.5 g/kg (19 °C) 35.4 g/kg (25 °C)[2]
Solubility in ethanol	6 g/L (19 °C)[6]
Solubility in glycerol	97 g/kg[2]
Solubility in sulfur dioxide	0.09 g/kg (0 °C) 0.031 g/kg (25 °C)[2]
Solubility in acetic acid	0.67 g/kg (16.6 °C)[2]
Vapor pressure	133.3 Pa (160.4 °C)[7] 6.5 kPa (250 °C) 33.5 kPa (300 °C)[6]
Acidity (pKa)	9.24
Magnetic susceptibility (χ)	-36.7·10−6 cm3/mol[8]
Refractive index(nD)	1.642 (20 °C)[2]
Structure
Crystal structure	CsCl, cP2[9]
Space group	Pm3m, No. 221
Lattice constant	a = 0.3876 nm
Formula units (Z)	1
Thermochemistry
Heat capacity (C)	84.1 J/mol·K[6]
Std molar entropy (So298)	94.56 J/mol·K[6]
Std enthalpy of formation (ΔfHo298)	−314.43 kJ/mol[6]
Gibbs free energy(ΔfG˚)	−202.97 kJ/mol[6]
Pharmacology
ATC code	B05XA04 (WHO) G04BA01 (WHO)
Hazards
Safety data sheet	ICSC 1051
GHS pictograms	[7]
GHS signal word	Warning
GHS hazard statements	H302, H319[7]
GHS precautionary statements	P305+351+338[7]
NFPA 704	0 2 0
Flash point	Non-flammable
Lethal dose or concentration (LD, LC):
LD50 (median dose)	1650 mg/kg (rats, oral)
US health exposure limits (NIOSH):
PEL(Permissible)	none[10]
REL(Recommended)	TWA 10 mg/m3 ST 20 mg/m3 (as fume)[10]
IDLH (Immediate danger)	N.D.[10]
Related compounds
Other anions	Ammonium fluoride Ammonium bromide Ammonium iodide
Other cations	Sodium chloride Potassium chloride Hydroxylammonium chloride
Except where otherwise noted, data are given for materials in their standard state (at 25 Â°C [77 Â°F], 100 kPa).
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Infobox references

Ammonium chloride is an inorganic compound with the formula NH₄Cl and a white crystalline salt that is highly soluble in water. Solutions of ammonium chloride are mildly acidic. Sal ammoniac is a name of the natural, mineralogical form of ammonium chloride. The mineral is commonly formed on bu

• Inorganic Compound
• CAS Number: 12125-02-9
• EINECS EC Number: 235-186-4
• HS Code: 282710**
• Molecular Weight: 53.49
• Description: White crystalline salt / Colorless crystals
• Molecular Formula: NH4Cl or ClH4N
• Molecular Weight: 53.489 g/mol
• PubChem CID: 25517
• Chemical Names: AMMONIUM CHLORIDE
• Boiling point: 520 °C
• Melting point: 338 °C
• Solubility: Soluble in water & ethanol
• PH of 5% solution: 4.5 to 6.0.