CAS 108-32-7: Propylene Carbonate (C4H6O3)

Identity

CAS Number	108-32-7
Molecular Formula	C4H6O3
IUPAC Name	4-methyl-1,3-dioxolan-2-one
Molecular Weight	102.09 g/mol
SMILES	`CC1OC(=O)O1`
Synonyms	cyclic propylene carbonate, PC, 1,2-propanediol cyclic carbonate

2D Structure

Physical Properties

Density	1.205 g/mL at 25°C
Boiling Point	240.0°C
Melting Point	-48.8°C
Flash Point	132.0°C
Vapor Pressure	0.003 kPa at 20°C
Refractive Index	nD = 1.419
Dielectric Constant	ε = 64.0

Safety & GHS Classification

Irritant

H319: Causes serious eye irritation
H412: Harmful to aquatic life with long lasting effects

Storage: Store in tightly sealed containers. Hygroscopic — protect from moisture. Low toxicity but may be harmful if ingested. Use in well-ventilated area.