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Merck
CN

5.89579

Pyridine

anhydrous, 99.8%

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About This Item

Empirical Formula (Hill Notation):
C5H5N
CAS Number:
Molecular Weight:
79.10
NACRES:
NA.22
UNSPSC Code:
12352005
Beilstein/REAXYS Number:
103233
MDL number:
Grade:
anhydrous
Assay:
99.8%
Bp:
115 °C (lit.)
Vapor pressure:
10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)
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Product Name

Pyridine, anhydrous, 99.8%

SMILES string

C1=CN=CC=C1

InChI

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

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

grade

anhydrous

vapor density

2.72 (vs air)

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

assay

99.8%

autoignition temp.

899 °F

expl. lim.

12.4 %

refractive index

n20/D 1.509 (lit.)

bp

115 °C (lit.)

mp

−42 °C (lit.)

density

0.978 g/mL at 25 °C (lit.)

Quality Level

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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

WGK 2

flash_point_f

68.0 °F - closed cup

flash_point_c

20 °C - closed cup

Regulatory Information

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