Diisocyanatomethylbenzene

Synonyms

Isocyanic acid, methylphenylene ester; Benzene, diisocyanatomethyl-; [ChemIDplus] Crudell TDI; 2,4-TDI unspecified isomer; [INCHEM PIMs] UN2078

Category

Diisocyanates

Description

Melting point = 20 deg C; [ChemIDplus] Colorless to yellow liquid or solid with a sweet, pungent, fruity odor; mp = 19.5-21.5 deg C; [INCHEM PIMs]

Sources/Uses

This is the crude form of toluene 2,4-diisocyanate (2,4-TDI) with an unspecified isomer ratio commercially available but not usually used; [INCHEM PIMs] Used to make polyurethane foams and coatings, elastomeric coating systems, adhesives, and sealants; Occupational exposure occurs in adhesives production, insulation application, resin and lacquer production, chemical synthesis, paint spraying, polyurethane foam production, work with rubber, shipbuilding, textile processing, and wire coating; [INCHEM PIMs]

Comments

Reacts with water; Inhalation is the most dangerous route of exposure; May cause skin sensitization; Reports of eye irritation, corneal edema, and conjunctivitis; Inhalation may cause systemic effects and hypersensitivity reactions; Animal studies have demonstrated that dermal exposure can cause pulmonary sensitization; Inhalation of concentrations above 3.5 mg/m3 may cause chemical pneumonitis; [INCHEM PIMs] See "Toluene 2,4-diisocyanate."

Biomedical References

0.0135 mm Hg

Explanatory Notes

VP from ChemIDplus;

Yes

Yes

Yes

Yes

Diseases

Occupational diseases associated with exposure to this agent:

• Asthma, occupational
• Contact dermatitis, allergic

Processes

Industrial Processes with risk of exposure:

• Painting (Pigments, Binders, and Biocides)
• Plastic Composites Manufacturing
• Textiles (Fiber & Fabric Manufacturing)
• Working with Glues and Adhesives