4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE manufacturers and suppliers

4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE suppliers

4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE

CAS:: 139-25-3

MF:: C17H14N2O2

MW:: 278.31

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Properties

Boiling point:: 421.12°C (rough estimate)

Density: 1.1222 (rough estimate)

refractive index: 1.5500 (estimate)

Safety Information

Symbol(GHS): GHS08,GHS07,GHS09

Signal word: Danger

Hazard statements: H334-H319-H315-H410-H335-H332

Precautionary statements: P264-P280-P305+P351+P338-P337+P313P-P261-P285-P304+P341-P342+P311-P501-P264-P280-P302+P352-P321-P332+P313-P362-P261-P271-P304+P340-P312-P273-P391-P501

RTECS: NQ8820000

Toxicity: mouse,LD50,intravenous,320mg/kg (320mg/kg),U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#00946,

Use

Isocyanates and thioisocyanates, such as 4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE, are incompatible with many classes of compounds, reacting exothermically to release toxic gases. Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat. Acids and bases initiate polymerization reactions in these materials. Some isocyanates react with water to form amines and liberate carbon dioxide. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence, [Wischmeyer(1969)].

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