CAS No.: 110-63-4 Chinese Name: 1,4-Butanediol English Name: 1,4-Butanediol Alias: BDO; 1,4-Dihydroxybutane Content: 99.9% Molecular Formula: C4H10O2 Molecular Weight: 90.121 EINECS No.: 203-786-5 Package: 200KG/drum Specification: Item | Unit | Specification Purity | wt% | 99.5 Min Color | APHA | 5 Max Freezing Point | °C | 19.6 Min Water Content | wt% | 0.05 Max Usage: Used as a solvent and humectant, and in the production of plasticizers, pharmaceuticals, polyester resins, polyurethane resins, etc. Physical Properties: Appearance: Colorless oily liquid. Melting Point: 20.2°C Boiling Point: 228°C Relative Density: 1.0171 Refractive Index: 1.4461 Flash Point: 121°C Solubility: Miscible with water. Soluble in methanol, ethanol, acetone, slightly soluble in ether. Storage: Store in a cool, well-ventilated area away from fire sources.