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Hexamethylene diisocyanate

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Formula  C8H12N2O2
Molar mass  168.2 g/mol
Melting point  -67 °C
Density  1.05 g/cm³
Boiling point  255 °C
Appearance  Colourless liquid
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Hexamethylene diisocyanate (HDI) 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 isophorone diisocyanate) only 3.4% of the global diisocyanate market in the year 2000. Aliphatic diisocyanates are used 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 and vessels.

Contents

Hexamethylene diisocyanate Hexamethylene Diisocyanate Hexamethylene Diisocyanate Suppliers and

Synthesis

There are two steps to the synthesis of pure HDI:

Hexamethylene diisocyanate HEXAMETHYLENE DIISOCYANATE CAS 822060 05201587 MP Biomedicals
  • Phosgenation: Reaction of hexamethylene diamine with phosgene to form crude HDI
  • Purification: Distillation of crude HDI to extract pure HDI
  • Chemistry

    HDI is a symmetrical molecule and thus has two isocyanate groups of equal reactivity.

    Hexamethylene diisocyanate One Synthetic Approach of Hexamethylene diisocyanate Chempedia
    Hexamethylene diisocyanate httpsuploadwikimediaorgwikipediacommonsthu
    Hexamethylene diisocyanate 16hexamethylene diisocyanate Ligand page IUPHARBPS Guide to
    Hexamethylene diisocyanate HEXAMETHYLENE DIISOCYANATE HDI
    Hexamethylene diisocyanate Hexamethylene diisocyanate C8H12N2O2 ChemSpider
    Hexamethylene diisocyanate CAS No6336895616Hexamethylene diisocyanate polymer with
    Hexamethylene diisocyanate Patent EP0295055A2 Biodegradable polymeric materials based on

    References

    Hexamethylene diisocyanate Wikipedia


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