Merck
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1.07462

Supelco

Pyridine

EMPLURA®

Synonym(s):
Azine, Azabenzene, Pyridine
Empirical Formula (Hill Notation):
C5H5N
CAS Number:
Molecular Weight:
79.10
MDL number:
EC Index Number:
203-809-9

Quality Level

vapor pressure

26.7 hPa ( 25 °C)

product line

Emplura®

assay

≥99% (GC)

form

liquid

autoignition temp.

482 °C

potency

891 mg/kg LD50, oral (Rat)
1121 mg/kg LD50, skin (Rabbit)

impurities

≤0.1% Water

evapn. residue

≤0.01%

pH

8.81 (20 °C in H2O)

bp

115 °C/1013 hPa

mp

-42 °C

transition temp

flash point 17 °C

solubility

soluble 1000 g/L

density

0.982 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

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

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

Related Categories

Analysis Note

Purity (GC): ≥ 99.0 %
Identity (IR): conforms
Density (d 20 °C/ 4 °C): 0.982 - 0.984
Evaporation residue: ≤ 0.01 %
Water: ≤ 0.1 %

Legal Information

EMPLURA is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

FlameExclamation mark

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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