Identification of Tolylene-2,4-diisocyanate

Tolylene-2,4-diisocyanate

1.Chemical Properties

Name:Tolylene-2,4-diisocyanate

EINECS:209-544-5

Molecular Formula:C9H6N2O2

CAS Registry Number:584-84-9

Appearance:Water white to pale yellow liquid or crystals with a sweet, fruity, pungent odor. Darkens on exposure to sunlight.

Molecular Weight:174.16

Density:1.225

Boiling Point:115-120℃ (10 mmHg)

Melting Point:12.5-13.5℃

Flash Point:127℃

Storage Temperature:2-8°C

Refractive index:1.567-1.569

Solubility:reacts

Stability:Stable, but decomposes in the presence of moisture. Also heat and light sensitive. Readily polymerizes in contact with base. Reacts with compounds containing active hydrogen. Incompatible with strong oxidizing agents. Corrodes some copper and aluminium alloys.

Usage:Chemical intermediate.


2.Physical Properties

*Tolylene-2,4-diisocyanate is a colorless, yellow, or dark liquid with a sharp, pungent odor.
The odor threshod for Tolylene-2,4-diisocyanate is 0.17 parts per million (ppm).

*The chemical formula for Tolylene-2,4-diisocyanate is C9H6N2O2, and the
molecular weight is 174.15 g/mol.

*The vapor pressure for Tolylene-2,4-diisocyanate is 0.01 mm Hg at 80 °C, and it has a log octanol/water partition coefficient (log Kow) of 0 to 1 (estimated).

*Commercial toluene diisocyanate is comprised of approximately 80% Tolylene-2,4-diisocyanate and 20% toluene 2,6-diisocyanate.