Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

24-6500

Sigma-Aldrich

Pyridine

JIS special grade, ≥99.5%

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C5H5N
CAS Number:
Molecular Weight:
79.10
Beilstein/REAXYS Number:
103233
EC Number:
MDL number:
UNSPSC Code:
12352005
PubChem Substance ID:
grade:
JIS special grade
assay:
≥99.5%
bp:
115 °C (lit.)
vapor pressure:
10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

grade

JIS special grade

vapor density

2.72 (vs air)

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

assay

≥99.5%

form

liquid

autoignition temp.

899 °F

expl. lim.

12.4 %

availability

available only in Japan

dilution

(for analytical testing)

refractive index

n20/D 1.509 (lit.)

pH

8.5 (25 °C, 15.82 g/L)

bp

115 °C (lit.)

mp

−42 °C (lit.)

density

0.978 g/mL at 25 °C (lit.)

SMILES string

C1=CN=CC=C1

InChI

1S/C5H5N/c1-2-4-6-5-3-1/h1-5H

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

pictograms

FlameExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2

Storage Class

3 - Flammable liquids

wgk_germany

WGK 2

flash_point_f

68.0 °F - closed cup

flash_point_c

20 °C - closed cup


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service