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J & K SCIENTIFIC LTD.
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Product Name:4,4'-Diisocyanato-3,3'-diMethyldiphenylMethane CAS:139-25-3 Purity:98.0%(GC) Package:1G,5G
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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Product Name:4,4'-Diisocyanato-3,3'-diMethyldiphenylMethane CAS:139-25-3 Purity:>98.0%(GC) Package:1g;5g Remarks:D2097
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Energy Chemical
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Product Name:4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE CAS:139-25-3 Purity:98% Package:1G,5G
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| 4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE Basic information |
Product Name: | 4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE | Synonyms: | 1,1’-methylenebis[4-isocyanato-3-methyl-benzen;5,5’-methylenebis(2-isocyanato-toluen;5,5’-methylenebis(2-isocyanatotoluene);benzene,1,11-methylenebis(4-isocyanato-3-methyl-;diisocyanatodimethyldiphenylmethane;isocyanicacid,esterwithdi-o-toluenemethane;BIS(4-ISOCYANATO-3-METHYLPHENYL)METHANE;3,3'-DIMETHYLDIPHENYLMETHANE-4,4'-DIISOCYANATE | CAS: | 139-25-3 | MF: | C17H14N2O2 | MW: | 278.31 | EINECS: | | Product Categories: | Diphenylmethanes (for High-Performance Polymer Research);Functional Materials;Reagent for High-Performance Polymer Research | Mol File: | 139-25-3.mol | ![4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE Structure](CAS/GIF/139-25-3.gif) |
| 4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE Chemical Properties |
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, |
| 4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE Usage And Synthesis |
Uses | 4,?4''-?Diisocyanato-?3,?3''-?dimethyldiphenylmeth?ane is a reagent used in the synthesis of polyurethane materials.Environmental toxin on US EPA Toxic Release Inventory list (TRI) list. | Reactivity Profile | 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)]. | Safety Profile | Poison by intravenous
route. A sensitizer. When heated to
decomposition it emits toxic fumes of NOx
and CN-. |
| 4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE Preparation Products And Raw materials |
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