Formula C12H18N2O2 Density 1.06 g/cm³ Melting point -60 °C | Molar mass 222.3 g/mol Boiling point 158 °C | |
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Appearance Colourless to slightly yellow liquid | ||
When heated to decomposition isophorone diisocyanate ipdi emits toxic fumes of nitrogen oxides
Isophorone diisocyanate (IPDI) is an organic compound in the class known as isocyanates. More specifically, it is an aliphatic diisocyanate. It is produced in relatively small quantities, accounting for (with hexamethylene diisocyanate) only 3.4% of the global diisocyanate market in the year 2000. Aliphatic diisocyanates are used, not in the production of polyurethane foam, but in special applications, such as enamel coatings which are resistant to abrasion and degradation from ultraviolet light. These properties are particularly desirable in, for instance, the exterior paint applied to aircraft.
Contents
- When heated to decomposition isophorone diisocyanate ipdi emits toxic fumes of nitrogen oxides
- Synthesis
- Chemistry
- References
Synthesis
There are five steps to the synthesis of pure IPDI:
Chemistry
IPDI exists in two stereoisomers, cis and trans. Their reactivities are similar. Each stereoisomer is an unsymmetrical molecule, and thus has isocyanate groups with different reactivities. The primary isocyanate group is more reactive than the secondary isocyanate group.