Toluene-2,4-diisocyanate: Overview
Description
TDI is used to manufacture polyurethane products. These are found in the form of coatings, sprays, insulation materials, polyurethane coated fabrics, and the largest application, foam cushioning.
Substance details
Substance name: Toluene-2,4-diisocyanate
CASR number: 584-84-9
Molecular formula: C9H6N2O2
Synonyms: TDI, Toluene diisocyanate, 2,4 Diisocyanatotoluene, Isocyanic Acid, Methylphenylene Ester, 2,4-Diisocyanatotoluene, 2,4-Tolylene diisocyanate, cresorcinol diisocyanate, 4-methy-1,3-phenylene diisocyanate, toluene 2,4-diisocyanate.
Physical properties
2,4-Toluene diisocyanate (TDI) is a clear to pale yellow liquid with a sharp pungent odour.
Melting Point: 12.5 - 13.5°C
Boiling Point: 251°C
Flash Point: 121°C
Specific Gravity: 1.225
Vapour Density: 6
Chemical properties
TDI reacts with water, releasing carbon dioxide. It reacts (sometimes violently) with acids, bases, and alcohols.
Further information
The National Pollutant Inventory (NPI) holds data for all sources of Toluene-2,4-diisocyanate in Australia.
Key
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