Arsine isocyanate

Methylarsine, trifluoromethylarsine, and bis(trifluoromethyl)arsine [371-74-4] C2HAsF, are gases at room temperature all other primary and secondary arsines are liquids or solids. These compounds are extremely sensitive to oxygen, and ia some cases are spontaneously inflammable ia air (45). They readily undergo addition reactions with alkenes (51), alkynes (52), aldehydes (qv) (53), ketones (qv) (54), isocyanates (55), and a2o compounds (56). They also react with diborane (43) and a variety of other Lewis acids. Alkyl haUdes react with primary and secondary arsiaes to yield quaternary arsenic compounds (57). 

Some materials, such as arsine, phosphine, toluene di-isocyanate and stibine, may be present in concentrations in excess of their hygiene standards yet undetectable by smell. 

BUTYL ISOBUTYRATE see BRQ350 n-BUTYL ISOCYANATE see BRQ500 n-BUTYL ISOPENTANOATE see ISXOOO BUTYL(ISOPROPYL)ARSINIC ACID see BRQ800... 

ANHYDRIDE ARSENIQUE (French) (1303-28-2) Incompatible with acids, aluminum, halogens, rubidium carbide, strong alkalis, zinc. Gradually deliquesces (absorbs moisture from atmospheric air, becoming liquid) on exposure to air, forming arsenic acid. Contact with moisture, water, steam forms arsenic acid. Incompatible with sulfuric acid, caustics, ammonia, aliphatic amines, alkanolamines, amides, organic anhydrides, isocyanates, vinyl acetate, alkylene oxides, epichlorohydrin. Contact with acids or acid mists releases deadly arsine gas. Corrosive to metals in the presence of moisture. 

Carbodiimide polymers n. Selfi-addition ofi isocyanates with the aid ofi organic phosphine and arsine oxides as catalysts form yields ofi polymers refierred to as carbodii-mides example, nRN=C=NR. 

Sulfonyls RR S02 Sulfinyls RR SO Seleninyls RR SeO Phosphoryls RR R TO Arsine oxides RR R"AsO Amine oxides RR R"NO Nitrosos R—N=0 Nitros RNO2 Isocyanates R—N=C=0... 

Other Compounds. Horner and co-workers [129-131] have described the production of optically active phosphines and arsines in the cathodic cleavage of quaternary phosphonium and arsonium salts. This reaction, like its reverse quaternization reaction, takes place with retention of configuration. Shapoval, Skobets, and Markova [132, 133] have described the production of a. stereoregular isocyanate polymer during reduction at a nickel cathode in dimethyl-formamide. The formation of a stereoregular product evidently demonstrates the orienting effect of the electrode on the molecules of the monomer in the polymerization process. 

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