Ammonia (data page)

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This page provides supplementary chemical data on COMPOUND.

Contents

1 Material Safety Data Sheet
2 Structure and properties
3 Thermodynamic properties
4 Spectral data
5 References
6 Structure and properties
7 Thermodynamic properties
8 Spectral data
9 Regulatory data
10 Material Safety Data Sheet
11 References
12 External links

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as [SIRI], and follow its directions.

Structure and properties

Structure and properties
Index of refraction, n_D ?
Abbe number ?
Dielectric constant, ε_r ? ε₀ at ? °C
Bond strength ?
Bond length ?
Bond angle ?
Magnetic susceptibility ?

Structure and properties
Index of refraction, n_D	?
Abbe number	?
Dielectric constant, ε_r	? ε₀ at ? °C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	?

Thermodynamic properties

Phase behavior
Triple point ? K (? °C), ? Pa
Critical point ? K (? °C), ? Pa
Std enthalpy change
of fusion, Δ_fusH^o ? kJ/mol
Std entropy change
of fusion, Δ_fusS^o ? J/(mol·K)
Std enthalpy change
of vaporization, Δ_vapH^o ? kJ/mol
Std entropy change
of vaporization, Δ_vapS^o ? J/(mol·K)
Solid properties
Std enthalpy change
of formation, Δ_fH^o_solid ? kJ/mol
Standard molar entropy,
S^o_solid ? J/(mol K)
Heat capacity, c_p ? J/(mol K)
Liquid properties
Std enthalpy change
of formation, Δ_fH^o_liquid ? kJ/mol
Standard molar entropy,
S^o_liquid ? J/(mol K)
Heat capacity, c_p ? J/(mol K)
Gas properties
Std enthalpy change
of formation, Δ_fH^o_gas ? kJ/mol
Standard molar entropy,
S^o_gas ? J/(mol K)
Heat capacity, c_p ? J/(mol K)

Phase behavior
Triple point	? K (? °C), ? Pa
Critical point	? K (? °C), ? Pa
Std enthalpy change of fusion, Δ_fusH^o	? kJ/mol
Std entropy change of fusion, Δ_fusS^o	? J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o	? kJ/mol
Std entropy change of vaporization, Δ_vapS^o	? J/(mol·K)
Solid properties
Std enthalpy change of formation, Δ_fH^o_solid	? kJ/mol
Standard molar entropy, S^o_solid	? J/(mol K)
Heat capacity, c_p	? J/(mol K)
Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid	? kJ/mol
Standard molar entropy, S^o_liquid	? J/(mol K)
Heat capacity, c_p	? J/(mol K)
Gas properties
Std enthalpy change of formation, Δ_fH^o_gas	? kJ/mol
Standard molar entropy, S^o_gas	? J/(mol K)
Heat capacity, c_p	? J/(mol K)

Spectral data

UV-Vis
λ_max nm
Extinction coefficient, ε ?
IR
Major absorption bands cm⁻¹
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of
main fragments

UV-Vis
λ_max	nm
Extinction coefficient, ε	?
IR
Major absorption bands	cm⁻¹
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of main fragments

References

Except where noted otherwise, data relate to standard ambient temperature and pressure.

[Chemical infoboxDisclaimer] applies.

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This page provides supplementary chemical data on ammonia.

Structure and properties

Molecular structure
Point group C_3v
Bond length 101.7 pm (N–H)
Bond angle 107.8° (H–N–H)
Bond strength 435 kJ/mol (H–NH₂)
Crystal data
Crystal structure ?
Properties
Dipole moment 1.46 D
Dielectric constant 22 ε₀ at 239 K
Magnetic susceptibility diamagnetic

Molecular structure
Point group	C_3v
Bond length	101.7 pm (N–H)
Bond angle	107.8° (H–N–H)
Bond strength	435 kJ/mol (H–NH₂)
Crystal data
Crystal structure	?
Properties
Dipole moment	1.46 D
Dielectric constant	22 ε₀ at 239 K
Magnetic susceptibility	diamagnetic

Thermodynamic properties

Phase behavior
Triple point 195.4 K (-77.75 °C), 6.060 kPa
Critical point 405.5 K (132.3 °C), 113.00 bar
Std enthalpy change
of fusion, Δ_fusH^o ? kJ/mol
Std entropy change
of fusion, Δ_fusS^o ? J/(mol·K)
Std enthalpy change
of vaporization, Δ_vapH^o +23.35 kJ/mol
Std entropy change
of vaporization, Δ_vapS^o ? J/(mol·K)
Solid properties
Std enthalpy change
of formation, Δ_fH^o_solid ? kJ/mol
Standard molar entropy,
S^o_solid ? J/(mol K)
Heat capacity, c_p ? J/(mol K)
Liquid properties
Std enthalpy change
of formation, Δ_fH^o_liquid ? kJ/mol
Standard molar entropy,
S^o_liquid ? J/(mol K)
Heat capacity, c_p ? J/(mol K)
Gas properties
Std enthalpy change
of formation, Δ_fH^o_gas −45.92 kJ/mol
Standard molar entropy,
S^o_gas 192.77 J/(mol K)
Heat capacity, c_p 35.06 J/(mol K)

Phase behavior
Triple point	195.4 K (-77.75 °C), 6.060 kPa
Critical point	405.5 K (132.3 °C), 113.00 bar
Std enthalpy change of fusion, Δ_fusH^o	? kJ/mol
Std entropy change of fusion, Δ_fusS^o	? J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o	+23.35 kJ/mol
Std entropy change of vaporization, Δ_vapS^o	? J/(mol·K)
Solid properties
Std enthalpy change of formation, Δ_fH^o_solid	? kJ/mol
Standard molar entropy, S^o_solid	? J/(mol K)
Heat capacity, c_p	? J/(mol K)
Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid	? kJ/mol
Standard molar entropy, S^o_liquid	? J/(mol K)
Heat capacity, c_p	? J/(mol K)
Gas properties
Std enthalpy change of formation, Δ_fH^o_gas	−45.92 kJ/mol
Standard molar entropy, S^o_gas	192.77 J/(mol K)
Heat capacity, c_p	35.06 J/(mol K)

Spectral data

UV-Vis
λ_max None nm
Extinction coefficient, ε None
IR
Major absorption bands 3444, 3337, 1627, 950 cm⁻¹
NMR
Proton NMR
Carbon-13 NMR None - no carbons
Other NMR data
MS
Masses of
main fragments 17 (100%)
16(80%)
15(9%)

UV-Vis
λ_max	None nm
Extinction coefficient, ε	None
IR
Major absorption bands	3444, 3337, 1627, 950 cm⁻¹
NMR
Proton NMR
Carbon-13 NMR	None - no carbons
Other NMR data
MS
Masses of main fragments	17 (100%) 16(80%) 15(9%)

Regulatory data

Regulatory data
EINECS number 231-635-3 (gas)
215-647-6 (soln.)
EU index number 007-001-00-5 (gas)
007-001-01-2 (soln.)
PEL-TWA (OSHA) 50 ppm (35 mg/m³)
IDLH (NIOSH) 300 ppm
Flash point 11 °C
Autoignition temperature 651 °C
Explosive limits 15–28%
RTECS number BO0875000

Regulatory data
EINECS number	231-635-3 (gas) 215-647-6 (soln.)
EU index number	007-001-00-5 (gas) 007-001-01-2 (soln.)
PEL-TWA (OSHA)	50 ppm (35 mg/m³)
IDLH (NIOSH)	300 ppm
Flash point	11 °C
Autoignition temperature	651 °C
Explosive limits	15–28%
RTECS number	BO0875000

Material Safety Data Sheet

References

[NIST Chemistry WebBook]

Except where noted otherwise, data relate to standard ambient temperature and pressure.

[Chemical infoboxDisclaimer] applies.

External links

[IR spectrum] (from NIST)

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