Ammonium Chloride - The NIST WebBook

Ammonium Chloride

• Formula: ClH4N
• Molecular weight: 53.491
• IUPAC Standard InChI: InChI=1S/ClH.H3N/h1H;1H3 Copy
• IUPAC Standard InChIKey: NLXLAEXVIDQMFP-UHFFFAOYSA-N Copy
• CAS Registry Number: 12125-02-9
• Chemical structure: This structure is also available as a 2d Mol file
• Species with the same structure:
  • Ammonium chloride
• Other names: (NH4)Cl; Ammonium chloride ((NH4)Cl); Amchlor; Ammoneric; Ammoniumchlorid; Ammonium muriate; Chlorid amonny; Darammon; SAL AMMONIA; SAL AMMONIAC; Salammonite; Salmiac; Ammonium chloride fume; Ammonium uriate; Katapone VV-328; Quaternary ammonium chloride
• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • References
  • Notes
• Other data available:
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • X-ray Photoelectron Spectroscopy Database, version 5.0
• Options:
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Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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Condensed phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity	Value	Units	Method	Reference	Comment
ΔfH°solid	-314.55	kJ/mol	Review	Chase, 1998	Data last reviewed in September, 1965
Quantity	Value	Units	Method	Reference	Comment
S°solid	94.85	J/mol*K	Review	Chase, 1998	Data last reviewed in September, 1965

Solid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2 H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G Cp = heat capacity (J/mol*K) H° = standard enthalpy (kJ/mol) S° = standard entropy (J/mol*K) t = temperature (K) / 1000.

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Temperature (K)	298. to 458.	458. to 1500.
A	2101.470	-64.43640
B	-11194.40	327.2270
C	23342.30	-149.3460
D	-16996.70	24.39640
E	-26.83530	6.432830
F	-706.2010	-281.0640
G	4937.300	-24.41260
H	-314.5530	-314.5530
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in September, 1965	Data last reviewed in September, 1965

Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: William E. Acree, Jr., James S. Chickos

Quantity	Value	Units	Method	Reference	Comment
ΔsubH°	177.	kJ/mol	N/A	Luft, 1955

Enthalpy of sublimation

ΔsubH (kJ/mol)	Temperature (K)	Method	Reference
168.6	550.	I	Callanan and Smith, 1971
176.6 ± 0.4	308. to 363.	TE	Wagner and Neumann, 1961

Reaction thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: José A. Martinho Simões

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C9H27NSn3 (cr) + ( • 55) (solution) + 3 (l) = ( • 55) (solution) + 3C3H10OSn (cr)

By formula: C9H27NSn3 (cr) + (HCl • 55H2O) (solution) + 3H2O (l) = (H4ClN • 55H2O) (solution) + 3C3H10OSn (cr)

Quantity	Value	Units	Method	Reference	Comment
ΔrH°	-293.7 ± 1.3	kJ/mol	RSC	Baldwin, Lappert, et al., 1972

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998 Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Luft, 1955 Luft, N.W., Ind. Chemist, 1955, 31, 502. [all data]

Callanan and Smith, 1971 Callanan, Jane E.; Smith, Norman O., Sublimation pressures of solid solutions III. NH4Cl + NH4Br, The Journal of Chemical Thermodynamics, 1971, 3, 4, 531-538, https://doi.org/10.1016/S0021-9614(71)80036-8 . [all data]

Wagner and Neumann, 1961 Wagner, Horst; Neumann, Kurt, Der Dampfdruck des Ammoniumchlorids zwischen 35 und 90°C, Zeitschrift für Physikalische Chemie, 1961, 28, 12, 51-70, https://doi.org/10.1524/zpch.1961.28.12.051 . [all data]

Baldwin, Lappert, et al., 1972 Baldwin, J.C.; Lappert, M.F.; Pedley, J.B.; Poland, J.S., J. Chem. Soc., Dalton Trans., 1972, 1943.. [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References

• Symbols used in this document:

  S°solid	Entropy of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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