Propylene glycol
- CAS NO. : 57-55-6
- CAT NO. : FO-OOC-7556
Physical State: Liquid
Color/Appearance: Colorless, viscous liquid
Melting Point: −59 °C
Boiling Point: 188.2 °C at 760 mmHg
Density: 1.036 g/cm³ at 20 °C
Refractive Index: 1.4316 at 20 °C
Solubility: Miscible with water, ethanol, acetone, and chloroform
Storage Conditions: Store in a tightly closed container at 2–8 °C, protected from moisture and light
Vapor Pressure: 0.1 mmHg at 25 °C
Flash Point: 188 °C (closed cup)
Log P (octanol/water): −0.92 (estimated)
Vapor Density: 2.0 (vs air)
Stability: Stable under normal conditions; incompatible with strong oxidizing agents
Molecular Formula: C₃H₈O₂
Molecular Weight: 76.09 g/mol