1,4-Butanediol
1,4-BDO, Tetramethylene Glycol.
- CAS
- 110-63-4
- EC
- 203-786-5
- Sectors
- Plastics & Polymers, Coatings, Adhesives, Sealants & Elastomers, Automotive
1,4-Butanediol (CAS 110-63-4) is a technical grade diol supplied as a clear, colorless, viscous liquid that acts as a chemical intermediate and chain extender in polyurethane and PBT engineering plastic production, and it also serves as a specialty solvent and pharmaceutical precursor. It is a colorless, viscous liquid that provides superior flexibility and durability to finished plastic products. As a high-purity monomer , it is a key building block for PBT (Polybutylene Terephthalate) resins used in automotive parts. Its excellent cross-linking properties make it indispensable in the manufacture of elastic fibers and synthetic leathers. It ensures high chemical resistance and mechanical strength in a wide range of industrial polymers.
Typical Properties
| Molecular formula | C4H10O2 |
|---|---|
| Molecular weight | 90.12 g/mol |
| Appearance | viscous colourless liquid |
| Form | Liquid |
| Color | Clear colorless |
| Odor | Odorless |
| Melting point | 20.1 °C |
| Boiling point | 230 °C @ Press: 760 Torr |
| Density | 1.0171 g/cm³ @ Temp: 20 °C |
| Water solubility | Miscible |
| Flash point | 135 °C |
| pH | 7-8 (500g/l, H2O, 20°C) |
| GHS signal word | Warning · Irritant / harmful |
| HS code | 29053980 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
1,4-Butanediol
Applications
- Polyurethane Production: Acts as a chain extender for high-quality elastomers and thermoplastic urethanes (TPU).
- PBT Engineering Plastics: Used as a raw material for durable, heat-resistant components in the electronics and automotive sectors.
- Industrial Solvent: Employed in cleaning agents and as a carrier for various chemical processing applications.
Safety & Risks
Classified as Harmful if Swallowed and can cause Central Nervous System depression. Wear Full-Face Shield and Chemical Gloves. Store in a tightly closed container away from heat.
Packaging
200 kg Steel Drums, IBC Tanks, and Isotank containers.