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Ammonium chloride

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Ammonium chloride
Unit cell of ammonium chloride
Crystalline ammonium chloride
Names
IUPAC name
Ammonium chloride
Other names
Sal ammoniac, Salmiac, Nushadir salt, Sal armagnac, Salt armoniack, Salmiak
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.031.976
EC Number
  • 235-186-4
KEGG
RTECS number
  • BP4550000
UNII
UN number 3077
  • [Cl-].[NH4+]
Properties
ClH4N
Molar mass 53.49 g·mol−1
Appearance White solid, hygroscopic
Odor Odorless
Density 1.519 g/cm3[1]
Melting point 338 °C (640 °F; 611 K) decomposes, sublimes[1]
Boiling point 520 °C (968 °F; 793 K)
Sublimes at 337.6 °C[2]
ΔsublHo = 176.1 kJ/mol
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)[3]
30.9 (395 g/L)[4]
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)[5]
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)
6.5 kPa (250 °C)
33.5 kPa (300 °C)[5]
Acidity (pKa) 9.24
-36.7·10−6 cm3/mol[6]
1.642 (20 °C)[2]
Structure
CsCl, cP2[7]
Pm3m, No. 221
a = 0.3876 nm



1
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−314.43 kJ/mol[5]
Standard molar
entropy
So298
94.56 J/mol·K[5]
Specific heat capacity, C 84.1 J/mol·K[5]
Pharmacology
B05XA04 (WHO) G04BA01 (WHO)
Hazards
GHS labelling:
Template:GHS07[8]
Warning
H302, H319
P305+P351+P338
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
0
0
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
1650 mg/kg (rats, oral)
NIOSH (US health exposure limits):
PEL (Permissible)
none[9]
REL (Recommended)
TWA 10 mg/m3 ST 20 mg/m3 (as fume)[9]
IDLH (Immediate danger)
N.D.[9]
Safety data sheet (SDS) ICSC 1051
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 °C [77 °F], 100 kPa).
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Infobox references

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.

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References

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  1. 1 2 Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.46. ISBN 1439855110.
  2. 1 2 3 4 5 6 7 ammonium chloride Archived 2015-07-23 at the Wayback Machine. Chemister.ru (2007-03-19). Retrieved on 2018-01-23.
  3. Seidell, Atherton; Linke, William F. (1919). Solubilities of Inorganic and Organic Compounds (2nd ed.). D. Van Nostrand Company.
    Results here are multiplied by water's density at temperature of solution for unit conversion.
  4. "Solubility Products of Selected Compounds". Salt Lake Metals. Archived from the original on 2015-10-21. Retrieved 2014-06-11.
  5. 1 2 3 4 5 Pradyot, Patnaik (2003). Handbook of Inorganic Chemicals. The McGraw-Hill Companies, Inc. ISBN 978-0-07-049439-8.
  6. Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.131. ISBN 1439855110.
  7. Breñosa, A.G; Rodríguez, F; Moreno, M (1993). "Phase transition temperatures and thermal hysteresis in NH4Cl1−xBrx (x≤0.05) crystals determined through charge transfer spectra of Cu2+(II) centres". Solid State Communications. 85 (2): 135. Bibcode:1993SSCom..85..135B. doi:10.1016/0038-1098(93)90362-Q.
  8. Sigma-Aldrich Co., Ammonium chloride. Retrieved on 2014-06-11.
  9. 1 2 3 NIOSH Pocket Guide to Chemical Hazards. "#0029". National Institute for Occupational Safety and Health (NIOSH).