Agent Name

3,3'-Dimethoxybenzidine-4,4'-diisocyanate

CAS Number

91-93-0

Formula

C16-H12-N2-O4

Major Category

Plastics & Rubber

Synonyms

1,1'-Biphenyl, 4,4'-diisocyanato-3,3'-dimethoxy-; 3,3'-Dimethoxy-4,4'-biphenylene diisocyanate; 3,3'-Dimethoxy-4,4'-biphenylylene isocyanate; 3,3'-Dimethoxy-4,4'-biphenylylene isocyanic acid ester; 3,3'-Dimethoxy-4,4'-diphenylyl isocyanate; 4,4'-Diisocyanato-3,3'-dimethoxy-1,1'-biphenyl; DADI; Dianisidine diisocyanate; Dimethoxybenzidine-4,4'-diisocyanate; Isocyanic acid, 3,3'-dimethoxy-4,4'-biphenylene ester; Isocyanic acid, 3,3'-dimethoxy-4,4'-biphenylylene ester; Isocyanic acid, ester with O,O'-dimethoxybiphenyl; [ChemIDplus] UN2811

Category

Diisocyanates

Description

Gray to brown solid; [HSDB] May decompose upon exposure to light and air; [MSDSonline]

Sources/Uses

Used in polymers and adhesives; [HSDB]

Comments

A respiratory and mucous membrane irritant; Diisocyanates are known to cause occupational asthma; Some cause skin sensitization; [CHEMINFO] A severe irritant; A lachrymator and potential sensitizer; Inhalation my result in edema; [MSDSonline] See "DIISOCYANATES."

Exposure Assessment
Explanatory Notes

Flash Point = 245 deg C; VP = 0.003 mm Hg at 149 deg C; [CHEMINFO] The Guide in the Emergency Response Guidebook is for "Toxic solid, organic, n.o.s."

Adverse Effects
Lacrimator

Yes

Asthma

Yes

IARC Carcinogen

Not Classifiable

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: