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

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

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

MDL Number:: MFCD00019910

MOL File:: 139-25-3.mol

Last updated:2023-05-04 15:14:07

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

Boiling point	421.12°C (rough estimate)
Density	1.1222 (rough estimate)
refractive index	1.5500 (estimate)
CAS DataBase Reference	139-25-3
FDA UNII	3D7H11TIK1
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 price More Price(4)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Biosynth Carbosynth	FD62629	4,4'-Diisocyanato-3,3'-dimethyldiphenylmethane	139-25-3	10g	$376	2021-12-16	Buy
American Custom Chemicals Corporation	CHM0011252	4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE 95.00%	139-25-3	1G	$694.85	2021-12-16	Buy
Biosynth Carbosynth	FD62629	4,4'-Diisocyanato-3,3'-dimethyldiphenylmethane	139-25-3	25g	$752	2021-12-16	Buy
American Custom Chemicals Corporation	CHM0011252	4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE 95.00%	139-25-3	5G	$1038.05	2021-12-16	Buy

Product number	Packaging	Price	Buy
FD62629	10g	$376	Buy
CHM0011252	1G	$694.85	Buy
FD62629	25g	$752	Buy
CHM0011252	5G	$1038.05	Buy

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

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

Global( 16)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	010-82848833 400-666-7788	jkinfo@jkchemical.com	China	96815	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006608290; 18621169109	market03@meryer.com	China	40241	62
Energy Chemical	021-021-58432009 400-005-6266	sales8178@energy-chemical.com	China	44751	61
9ding chemical ( Shanghai) Limited	4009209199	sales@9dingchem.com	China	22519	55
Shandong Ono Chemical Co., Ltd.	0539-6362799 20）		China	9998	58
Carbosynth	--	sales@carbosynth.com	United Kingdom	6018	58

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	62
Energy Chemical	61
9ding chemical ( Shanghai) Limited	55
Shandong Ono Chemical Co., Ltd.	58
Carbosynth	58

139-25-3(4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE)Related Search:

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4,4'-Diphenylmethane diisocyanate 2,4-DIMETHYLPHENYL ISOCYANATE 2-Methylphenyl isocyanate P-TOLYL ISOCYANATE 4-ETHYLPHENYL ISOCYANATE

4,4'-DIISOCYANATO-3,3',5,5'-TETRAETHYLDIPHENYLMETHANE

1of3

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 4,4'-DIISOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE 4,4'-DIISOTHIOCYANATO-3,3'-DIMETHYLDIPHENYLMETHANE BENZENE11METHYLENEBIS4ISOCYANATO3METHYL 4,4''-DIISOCYANATO-3,3-DIMETHYLDIPHENYLMETHANE 98+% 1-isocyanato-4-(4-isocyanato-3-methyl-benzyl)-2-methyl-benzene 1-isocyanato-4-[(4-isocyanato-3-methyl-phenyl)methyl]-2-methyl-benzene 1-isocyanato-4-[(4-isocyanato-3-methylphenyl)methyl]-2-methylbenzene Bis(4-isocyanato-3-methylphenyl)methane 3,3'-Dimethyldiphenylmethane-4,4'-diisocyanate 139-25-3 Diphenylmethanes (for High-Performance Polymer Research) Reagent for High-Performance Polymer Research Diphenylmethanes (for High-Performance Polymer Research) Functional Materials Reagent for High-Performance Polymer Research