Propylene Oxide (PO)
CAS Number: 75-56-9
Propylene oxide (PO, ≥99.5%) is a highly reactive epoxide and the world's second-largest propylene derivative, used as the primary building block for polyether polyols (for polyurethane foams), propylene glycol, and propylene glycol ethers. Its high reactivity and ability to ring-open with various nucleophiles make it a versatile chemical intermediate.
Technical Specifications
| appearance | Colorless clear liquid |
| purity (%) | ≥99.5 |
| water content (%) | ≤0.05 |
| boiling point (°C) | 34.2 |
| density (g/mL, 20°C) | 0.826–0.830 |
Applications
- Primary feedstock for polyether polyols used in polyurethane foam
- Production of propylene glycol (PG) and dipropylene glycol (DPG)
- Raw material for propylene glycol ethers (PM, DPM series)
- Epoxy resin synthesis and reactive diluent preparation
- Fumigant and sterilization agent for medical equipment
Key Features
- High purity ≥99.5% with low aldehyde and water content ensuring consistent polyol reactivity
- Key polyurethane raw material enabling forward integration into foam, elastomer, and coating supply chain
- Very high reactivity towards amines, alcohols, and carboxylic acids for diverse derivative synthesis
- Available in pressurized ISO tank containers with full hazardous material documentation
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CAS Number
75-56-9
Category
Industrial Solvents / ChemicalsAvailability
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