4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE
- CAS No.
- 139-25-3
- Chemical Name:
- 4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE
- Synonyms
- diisocyanatodimethyldiphenylmethane;5,5’-methylenebis(2-isocyanato-toluen;5,5’-methylenebis(2-isocyanatotoluene);BENZENE11METHYLENEBIS4ISOCYANATO3METHYL;BIS(4-ISOCYANATO-3-METHYLPHENYL)METHANE;isocyanicacid,esterwithdi-o-toluenemethane;4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE;3,3'-DIMETHYLDIPHENYLMETHANE-4,4'-DIISOCYANATE;1,1’-methylenebis[4-isocyanato-3-methyl-benzen;benzene,1,11-methylenebis(4-isocyanato-3-methyl-
- CBNumber:
- CB1408120
- Molecular Formula:
- C17H14N2O2
- Molecular Weight:
- 278.31
- MOL File:
- 139-25-3.mol
- Modify Date:
- 2024/12/18 14:07:02
| Boiling point | 421.12°C (rough estimate) |
|---|---|
| Density | 1.1222 (rough estimate) |
| refractive index | 1.5500 (estimate) |
| CAS DataBase Reference | 139-25-3 |
| EPA Substance Registry System | 3,3'-Dimethyldiphenylmethane-4,4'-diisocyanate (139-25-3) |
SAFETY
Risk and Safety Statements
| 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, |
4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE Chemical Properties,Uses,Production
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
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6100 | 58 | Inquiry |
| Shaanxi Dideu Medichem Co. Ltd | +86-29-81148696 +86-15536356810 | China | 3883 | 58 | Inquiry |
| ABCR GmbH & CO. KG | 49 721 95061 0 | Germany | 6831 | 75 | Inquiry |
| City Chemicals Corporation | 800-248-2436 | United States | 6460 | 72 | Inquiry |
| ASDI Incorporated | 888 577 ASDI | United States | 6922 | 67 | Inquiry |
| VWR International | 800 932 5000 | United Kingdom | 6548 | 82 | Inquiry |
| Service Chemical Inc. | 888-895-6920 | Germany | 6350 | 71 | Inquiry |
| 3B Scientific Corporation | 847.281.9822 | United States | 6718 | 47 | Inquiry |
| Leancare Ltd. | +33 962096793 | United Kingdom | 6446 | 42 | Inquiry |
| Energy Chemical | 021-021-58432009 400-005-6266 | China | 44732 | 61 | Inquiry |
| Supplier | Advantage |
|---|---|
| A.J Chemicals | 58 |
| Shaanxi Dideu Medichem Co. Ltd | 58 |
| ABCR GmbH & CO. KG | 75 |
| City Chemicals Corporation | 72 |
| ASDI Incorporated | 67 |
| VWR International | 82 |
| Service Chemical Inc. | 71 |
| 3B Scientific Corporation | 47 |
| Leancare Ltd. | 42 |
| Energy Chemical | 61 |
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