Agent Name

Polytetramethylene glycol, 4,4'-diphenylmethane diisocyanate polymer

CAS Number

9048-58-2

Formula

(C15-H10-N2-O2.(C4-H8-O)mult-H2-O)x

Major Category

Plastics & Rubber

Synonyms

4,4'-Methylenebis(phenylisocyanate), polytetramethylene ether glycol polymer; Diphenylmethane diisocyanate, poly(1,4-oxybutylene) glycol polymer; Methylene diphenyldiisocyanate, poly(oxytetramethylene)diol resin; Poly(oxy-1,4-butanediyl), alpha-hydro-omega-hydroxy-, polymer with 1,1'-methylenebis(4-isocyanatobenzene); Poly(tetramethylene glycol ether), 1,1'-methylenebis(4-isocyanatobenzene) polymer; Polytetramethylene glycol, 1,1'-methylenebis(4-isocyanatobenzene) polymer; [ChemIDplus] BAYTEC ME-040; Diphenylmethane Diisocyanate (MDI) Prepolymer; [Bayer Material Science MSDS] IMUTHANE 27-85A; [COIM MSDS]

Category

Polymers

Description

Yellow or amber solid with a musty odor; [Bayer Material Science MSDS] Light amber viscous liquid; [COIM MSDS]

Sources/Uses

Used as a polyurethane castable prepolymer; [COIM MSDS]

Comments

Contains 20-26% 4,4'-diphenylmethane diisocyanate (CAS# 101-68-8) and 1-10% diphenylmethane diisocyanate, mixed isomers (CAS# 26447-40-5); Reacts with water evolving carbon dioxide; An irritant; May cause skin and respiratory sensitization; [Bayer Material Science MSDS] Contains 10-30% 4,4'-diphenylmethane diisocyanate (CAS# 101-68-8); An irritant; May cause skin and respiratory sensitization; Highly toxic by ingestion, inhalation, and skin absorption; [COIM MSDS] See "Methylenediphenyl diisocyanate" and "Methylene bisphenyl isocyanate."

Adverse Effects
Skin Sensitizer

Yes

Asthma

Yes

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Diseases

Occupational diseases associated with exposure to this agent: