Toluene Diisocyanate TDI-65

Overview

TDI-65 is toluene diisocyanate containing about 65% of the 2,4-isomer and 35% of the 2,6-isomer. It is a colorless to light yellow liquid; the higher 2,6-isomer content gives a more open cell structure and suits polyester flexible foam.

Also known as

TDI 65/35; Toluene diisocyanate 65:35; Tolylene diisocyanate

CAS number

26471-62-5 (mixed isomers)

Molecular formula

C9H6N2O2

Molecular weight

174.16

Specifications

Test items	Specifications
Appearance	Colorless or light yellow liquid
TDI content /%	>99.5
2,4-TDI content /%	65±2.0
Isocyanate content (-NCO) /%	≥48
Density (25℃) /(g/cm³)	1.22
Hydrolyzable chlorine /%	≤0.01
Acid value /%	≤0.004
Viscosity (25℃) /mPa·s	3

Applications

• Polyester-based flexible polyurethane foam
• Specialty flexible foams, often blended with TDI-80
• Coatings, adhesives and elastomers

Packaging

250 kg/drum; ISO tank on request.

Storage

Store in tightly sealed containers in a dry, well-ventilated place at 15–35 ℃, protected from moisture. TDI is toxic by inhalation; handle with suitable protective equipment.