Pyridine Solvent Properties | Specification | Applications | Uses

CAS 110-86-1

Physical Properties
Molecular weight	79.10
Boiling point	115.25°C
Vapor pressure	18 Torr at 25°C
Freezing point	-41.55°C
Refractive index	1.5102 at 20°C
Density	0.9832 g/mL (8.205 lb/gal) at 20°C
	0.9782 g/mL (8.163 lb/gal) at 25°C
Dielectric constant	12.4 at 20°C
Dipole moment	2.37 D at 25°C
Solvent group	3
Polarity index (P’)	5.3
Eluotropic value on alumina	0.71
Viscosity	0.95 cP at 20°C
Surface tension	36.88 dyn/cm at 20°C
Solubility in water	Miscible in all proportions

Regulatory and Safety Data
DOT Hazard Class	3, Flammable Liquid
Packing Group	II
UN Identification Number	UN1282

Storage	Store in an area designed for flammable storage, or in an approved metal cabinet, away from direct sunlight, heat and sources of ignition.

EPA applicable waste code(s)	U196, F005, D038
Flash point	68°F (20°C) by closed cup
Lower explosive limit	1.8%
Upper explosive limit	12.4%
Time Weighted Average	5 PPM ACGIH