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360570 Sigma-Aldrich

Pyridine

ACS reagent, ≥99.0%

  • CAS Number 110-86-1

  • Empirical Formula (Hill Notation) C5H5N

  • Molecular Weight 79.10

  •  Beilstein/REAXYS Number 103233

  •  EC Number 203-809-9

  •  MDL number MFCD00011732

  •  PubChem Substance ID 329755266

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Properties

Related Categories ACS Grade, ACS Grade Solvents, ACS and Reagent Grade Solvents, Amber Glass Bottles, Carbon Steel Cans with NPT Threads,
grade   ACS reagent
vapor density   2.72 (vs air)
vapor pressure   10 mmHg ( 13.2 °C)
  20 mmHg ( 25 °C)
InChI Key   JUJWROOIHBZHMG-UHFFFAOYSA-N
assay   ≥99.0%
autoignition temp.   899 °F
expl. lim.   12.4 %
impurities   Reducing substances, passes test
  ≤0.002% NH3
  0.1% water
evapn. residue   ≤0.002%
refractive index   n20/D 1.509 (lit.)
bp   115 °C (lit.)
mp   −42 °C (lit.)
solubility   water: soluble
density   0.978 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤0.001%
  sulfate (SO42-): ≤0.001%
cation traces   Cu: ≤5 ppm

Description

General description

Pyridine (Pyr) is a nitrogen containing six membered heterocyclic compound commonly used as a base. It is a colorless liquid with a fishy odor. Pyridine moiety is present as a major component in a number of compounds like pyridine nucleotides, pyridine alkaloids, pyridine-based polymers and pyridine-containing macrocycles. It has wide application as a solvent, catalyst and as an intermediate for synthesis. IR, Raman and UV spectra of pyridine has been analyzed and the values obtained were used to calculate its thermodynamic properties. Photodegradation and bacterial degradation of Pyr has been studied.

Application

Pyridine may be used in the synthesis of the following:
• complexes with cobalt(II) halides
• pyridine-d5, a deuterated form of pyridine
• ionic liquid matrices (ILMs)

Packaging

1, 2.5, 4×4 L in glass bottle

View returnable container options.

100, 500 mL in glass bottle

18 L in steel drum

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN1282 - class 3 - PG 2 - Pyridine
WGK Germany 
2
Flash Point(F) 
62.6 °F
Flash Point(C) 
17 °C

Documents

Certificate of Analysis

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Certificate of Origin

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Dispensette™ S
Protocols & Articles

Articles

Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

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Pressure-Temperature Nomograph Interactive Tool

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Properties of Solvents Table

The table below presents the physical characteristics of common solvents. Easily reference or compare solvent properties like boiling point, density, and refractive index all from one list.
Keywords: Gas chromatography, Green chemistry, High performance liquid chromatography, Melting, Solvents

Peer-Reviewed Papers
15

References

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