Pyridine

CAS NO.：110-86-1
Empirical Formula: C5H5N
Molecular Weight: 79.1
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 03:31:55

What is Pyridine?

Definition

ChEBI: Pyridine is an azaarene comprising a benzene core in which one -CH group is replaced by a nitrogen atom. It is the parent compound of the class pyridines. It has a role as an environmental contaminant. It is a mancude organic heteromonocyclic parent, a monocyclic heteroarene, an azaarene and a member of pyridines.

Properties of Pyridine

Melting point:	-42 °C
Boiling point:	115 °C
Density	0.978
vapor density	2.73 (vs air)
vapor pressure	18 mm Hg @ at 20°C
refractive index	1.509-1.510
Flash point:	17 °C
form	Liquid
pka	5.23±0.10(Predicted)
color	colorless to light yellow
Odor	Fishy Stench odour
PH Range	8.5 at 15.82 g/l at 25 °C
explosive limit	1.80-12.40%
Water Solubility	Soluble in water

Safety information for Pyridine

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H225:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Pyridine

New Products

5-bromo-4-fluoro-2-nitrobenzaldehyde Cyclobutanone (R)-(-)-2-Amino-1-propanol Fmoc-OSu 1-(2-Chloroethyl)pyrrolidine Hydrochloride 2-Amino-2-(4-methylphenyl)acetic acid 2,4-Dihydroxybenzaldehyde Obidoxime hydrochloride API Pyrrolo[1,2-a]pyrimidine-6-carboxylic acid, 4,6,7,8-tetrahydro-4-oxo-, sodium salt (1:1), (6S) Dipropyl disulfide 4 pentyn 1 ol N-Vinylformamide Methacrylate-PEG-Methacrylate, Mn:35000 2,4-Dihydroxyacetophenone 2-Chloro 5-Fluoro Pyridine Vasicinone 2-Chloroisonicotinic Acid Tween 80 or Polysorbate 80 2-Butyn-1-oL 2-Pentyn-1-oL 4-Nitrobenzotrifluoride N-(4-Cyano-3-(trifluoromethyl)phenyl)-2-methyloxirane-2-carboxamide N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(1-methyl-1H-indol-3-yl)pyrimidin-2-amine Pirtobrutinib intd.