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320498

Sigma-Aldrich

Pyridine

ReagentPlus®, ≥99%

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Empirical Formula (Hill Notation):
C5H5N
CAS Number:
110-86-1
Molecular Weight:
79.10
Beilstein:
103233
EC Number:
203-809-9
MDL number:
MFCD00011732
PubChem Substance ID:
329753979
NACRES:
NA.21

vapor density

2.72 (vs air)

Quality Level

100

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

product line

ReagentPlus®

Assay

≥99%

form

liquid

autoignition temp.

899 °F

expl. lim.

12.4 %

refractive index

n20/D 1.509 (lit.)

pH

8.5 (25 °C, 15.82 g/L)

bp

115 °C (lit.)
115 °C

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

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This Item
P57506177970532975
Pyridine ReagentPlus®, ≥99%

Sigma-Aldrich

320498

Pyridine

Pyridine ReagentPlus®, ≥99%

Sigma-Aldrich

P57506

Pyridine

Pyridine-d5 "100%", ≥99.96 atom % D

Sigma-Aldrich

177970

Pyridine-d5

Pyridine-d5 ≥99.5 atom % D

Sigma-Aldrich

532975

Pyridine-d5

vapor pressure

10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)

vapor pressure

10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)

vapor pressure

-

vapor pressure

-

assay

≥99%

assay

≥99%

assay

≥99% (CP)

assay

≥99% (CP)

form

liquid

form

liquid

form

liquid

form

liquid

autoignition temp.

899 °F

autoignition temp.

899 °F

autoignition temp.

-

autoignition temp.

-

expl. lim.

12.4 %

expl. lim.

12.4 %

expl. lim.

0.34-6.3 % (lit.)

expl. lim.

0.34-6.3 % (lit.)

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

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 Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

68.0 °F - closed cup

Flash Point(C)

20 °C - closed cup

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