Aliphatic diisocyanate monomer, a colorless to slightly yellow, low-viscosity, pungent-smelling liquid at room temperature. Polyurethane systems built on it resist yellowing, weathering, oil, solvents and wear, with good elasticity.
Product Code
HDI
Hexamethylene Diisocyanate (HDI)
CAS Number
822-06-0
EINECS
212-485-8
Description
Synonyms
Key applications
- Polyurethane coatings and paints
- Polyurethane elastomers and adhesives
- Textile finishing agents
- Curing agents
Characteristics
| Molecular formula | C8H12N2O2 |
|---|---|
| Molecular weight | 168.19 |
| Appearance | Colorless transparent liquid |
| Color (Pt-Co) | ≤ 30 |
| Purity | ≥ 99.5% |
| NCO content | ≥ 49.70% |
| Hydrolyzable chloride | ≤ 0.5 mg/kg |
| Melting point | -67°C |
| Boiling point | 213°C |
| Flash point | 140°C (open cup) |
| Density | 1.04-1.05 (relative to water) |