Pyridine

grade

ACS reagent, puriss. p.a.

SMILES string

C1=CN=CC=C1

InChI

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

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

vapor density

2.72 (vs air)

vapor pressure

10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)

assay

≥99.8% (GC)

autoignition temp.

899 °F

expl. lim.

12.4 %

impurities

≤0.002% ammonia (NH₃), ≤0.05% water

evapn. residue

≤0.002%

refractive index

n20/D 1.509 (lit.), n20/D 1.510

bp

115 °C (lit.)

mp

−42 °C (lit.)

solubility

water: soluble

density

0.983 g/mL at 20 °C, 0.978 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤10 mg/kg, sulfate (SO₄^2-): ≤10 mg/kg

cation traces

Al: ≤0.5 mg/kg, Ba: ≤0.1 mg/kg, Bi: ≤0.1 mg/kg, Ca: ≤0.5 mg/kg, Cd: ≤0.05 mg/kg, Co: ≤0.02 mg/kg, Cr: ≤0.02 mg/kg, Cu: ≤0.05 mg/kg, Fe: ≤0.1 mg/kg, K: ≤0.5 mg/kg, Li: ≤0.1 mg/kg, Mg: ≤0.1 mg/kg, Mn: ≤0.02 mg/kg, Mo: ≤0.1 mg/kg, Na: ≤0.5 mg/kg, Ni: ≤0.02 mg/kg, Pb: ≤0.1 mg/kg, Sr: ≤0.1 mg/kg, Zn: ≤0.5 mg/kg