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Pyridine (data page)



This page provides supplementary chemical data on pyridine.

Additional recommended knowledge

Contents

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. MSDS is available from Fisher Scientific.

Structure and properties

Structure and properties
Index of refraction, nD 1.509 at 20°C
Abbe number ?
Dielectric constant, εr 12.3 ε0 at 25 °C
Bond strength  ?
Bond length  ?
Bond angle  ?
Magnetic susceptibility  ?
Surface tension[1] 40.8 dyn/cm at 0°C
38.0 dyn/cm at 20°C
26.4 dyn/cm at 100°C
Viscosity[2] 0.974 mPa·s at 20°C

Thermodynamic properties

Phase behavior
Triple point 231.48 K (–41.67 °C), ? Pa
Critical point 619 K (346 °C), 5660 Pa
Std enthalpy change
of fusion
, ΔfusHo
8.28 kJ/mol
Std entropy change
of fusion, ΔfusSo
35.8 J/(mol·K)
Std enthalpy change
of vaporization
, ΔvapHo
40.2 kJ/mol
Std entropy change
of vaporization, ΔvapSo
 ? J/(mol·K)
Solid properties
Std enthalpy change
of formation
, ΔfHosolid
 ? kJ/mol
Standard molar entropy,
Sosolid
 ? J/(mol K)
Heat capacity, cp  ? J/(mol K)
Liquid properties
Std enthalpy change
of formation
, ΔfHoliquid
100 kJ/mol
Standard molar entropy,
Soliquid
177 J/(mol K)
Enthalpy of combustion, ΔcHo –2782 kJ/mol
Heat capacity, cp 132.72 J/(mol K)
Gas properties
Std enthalpy change
of formation
, ΔfHogas
140 kJ/mol at 25°C
Standard molar entropy,
Sogas
 ? J/(mol K) at 25°C
Heat capacity, cp[3] 157.8 J/(mol K) at 25°C

Vapor pressure of liquid

P in mm Hg 1 10 40 100 400 760
T in °C –18.9 13.2 38.0 57.8 95.6 115.4

Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.

 

Spectral data

UV-Vis
λmax  ? 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

  1. ^ Lange's Handbook of Chemistry, 10th ed. pp 1661-1663
  2. ^ CRC Handbook of Chemistry and Physics, 44th ed. pp 2258-2263
  3. ^ a b Pure Component Properties (Queriable database). Chemical Engineering Research Information Center. Retrieved on 20 May 2007.
  • NIST Standard Reference Database. Retrieved on 20 May 2007.

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

Disclaimer applies.

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pyridine_(data_page)". A list of authors is available in Wikipedia.
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