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ChemicalBook >> CAS DataBase List >>3,3'-Dimethyl-4,4'-biphenylene diisocyanate

3,3'-Dimethyl-4,4'-biphenylene diisocyanate

3,3'-Dimethyl-4,4'-biphenylene diisocyanate Structure
3,3'-Dimethyl-4,4'-biphenylene diisocyanate structure
CAS No.
91-97-4
Chemical Name:
3,3'-Dimethyl-4,4'-biphenylene diisocyanate
Synonyms
TODI;nacconate200;3,3'-DIMETHYL-4;-diyl diisocyanate;3,3'-Dimethyl-4,4'-b;tolidinediisocyanate;bitoluenediisocyanate;bitolylenediisocyanate;o-Tolidine diisocyanate;-dimethylbiphenyl-4,4'
CBNumber:
CB2485599
Molecular Formula:
C16H12N2O2
Molecular Weight:
264.28
MDL Number:
MFCD00019908
MOL File:
91-97-4.mol
MSDS File:
SDS
Last updated:2026-01-13 11:16:22
Product description Number Pack Size Price
3,3'-DIMETHYL-4,4'-BIPHENYLENE DIISOCYANATE AldrichCPR S360902 1 unit $185
3,3'-DIMETHYL-4,4'-BIPHENYLENE DIISOCYANATE Aldrich S360902 250mg $179
4,4'-Diisocyanato-3,3'-dimethylbiphenyl >98.0%(GC) D2051 25g $73
4,4'-Diisocyanato-3,3'-dimethylbiphenyl >98.0%(GC) D2051 250g $434
4,4''-Diisocyanato-3,3''-dimethylbiphenyl D452168 5g $50
More product size
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3,3'-Dimethyl-4,4'-biphenylene diisocyanate Properties

Melting point 70-72°C
Boiling point 195-197°C (667 Pa)
Density 1.197 (80°C)
vapor pressure 0.003Pa at 25℃
refractive index 1.5800 (estimate)
Flash point 218°C
storage temp. 0-10°C
solubility soluble in Toluene
form pellet
color White to Almost white
Water Solubility 594.08μg/L at 25℃
LogP 6.052 at 25℃
Indirect Additives used in Food Contact Substances BITOLYLENE DIISOCYANATE
CAS DataBase Reference 91-97-4(CAS DataBase Reference)
FDA UNII 9L950NB0HN
EPA Substance Registry System 3,3'-Dimethyl-4,4'-diphenylene diisocyanate (91-97-4)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS07,GHS08
Signal word  Danger
Hazard statements  H302+H312+H332-H315-H319-H334-H341
Precautionary statements  P201-P202-P261-P264-P270-P271-P280-P284-P301+P312+P330-P302+P352+P312+P362+P364-P304+P340+P312-P305+P351+P338+P337+P313-P308+P313-P405-P501
RTECS  DV3960000
TSCA  TSCA listed
HS Code  29291090
NFPA 704
1
2 0

3,3'-Dimethyl-4,4'-biphenylene diisocyanate price More Price(17)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich S360902 3,3'-DIMETHYL-4,4'-BIPHENYLENE DIISOCYANATE AldrichCPR 91-97-4 1 unit $185 2025-07-31 Buy
Sigma-Aldrich S360902 3,3'-DIMETHYL-4,4'-BIPHENYLENE DIISOCYANATE Aldrich 91-97-4 250mg $179 2024-03-01 Buy
TCI Chemical D2051 4,4'-Diisocyanato-3,3'-dimethylbiphenyl >98.0%(GC) 91-97-4 25g $73 2025-07-31 Buy
TCI Chemical D2051 4,4'-Diisocyanato-3,3'-dimethylbiphenyl >98.0%(GC) 91-97-4 250g $434 2025-07-31 Buy
TRC D452168 4,4''-Diisocyanato-3,3''-dimethylbiphenyl 91-97-4 5g $50 2021-12-16 Buy
Product number Packaging Price Buy
S360902 1 unit $185 Buy
S360902 250mg $179 Buy
D2051 25g $73 Buy
D2051 250g $434 Buy
D452168 5g $50 Buy

3,3'-Dimethyl-4,4'-biphenylene diisocyanate Chemical Properties,Uses,Production

Uses

4,4''-Diisocyanato-3,3''-dimethylbiphenyl is used in preparation method of high-thixotropy single-component modified silane polymer sealant comprising thixotropic agent.

Reactivity Profile

Isocyanates and thioisocyanates, such as 3,3'-Dimethyl-4,4'-biphenylene diisocyanate, 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)].

Flammability and Explosibility

Not classified

Safety Profile

Poison by intravenous route. When heated to decomposition it emits toxic fumes of NOx. See also CYANATES and ESTERS.

3,3'-Dimethyl-4,4'-biphenylene diisocyanate Preparation Products And Raw materials

Raw materials

Preparation Products

3,3'-Dimethyl-4,4'-biphenylene diisocyanate Suppliers

Global( 208)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Chuanghai Biotechnology Co., Ltd 		+8615350571055 Sibel@chuanghaibio.com China 8753 58
Shaanxi Dideu Medichem Co. Ltd 		+86-29-81148696 +86-17392712697 1022@dideu.com China 3995 58
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21597 55
Shanghai Time Chemicals CO., Ltd. 		+86-021-57951555 +8617317452075 jack.li@time-chemicals.com China 1803 55
Tianjin Zhongxin Chemtech Co., Ltd. 		86-22-66880623 +8618622897568 sales@tjzxchem.com China 572 58
Hubei xin bonus chemical co. LTD 		86-13657291602 linda@hubeijusheng.com CHINA 22963 58
career henan chemical co 		+86-0371-86658258 +8613203830695 factory@coreychem.com China 29795 58
Antai Fine Chemical Technology Co.,Limited 		18503026267 info@antaichem.com CHINA 9636 58
SIMAGCHEM CORP 		+86-5922680277 +86-13806087780 sale@simagchem.com China 17346 58
Hefei TNJ Chemical Industry Co.,Ltd. 		+86-0551-65418671 +8618949823763 sales@tnjchem.com China 34563 58
Supplier Advantage
Hebei Chuanghai Biotechnology Co., Ltd 		58
Shaanxi Dideu Medichem Co. Ltd 		58
Henan Tianfu Chemical Co.,Ltd. 		55
Shanghai Time Chemicals CO., Ltd. 		55
Tianjin Zhongxin Chemtech Co., Ltd. 		58
Hubei xin bonus chemical co. LTD 		58
career henan chemical co 		58
Antai Fine Chemical Technology Co.,Limited 		58
SIMAGCHEM CORP 		58
Hefei TNJ Chemical Industry Co.,Ltd. 		58

View Lastest Price from 3,3'-Dimethyl-4,4'-biphenylene diisocyanate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
3,3'-Dimethyl-4,4'-biphenylene diisocyanate pictures 2026-01-30 3,3'-Dimethyl-4,4'-biphenylene diisocyanate
91-97-4
 US $0.00-0.00 / KG 1KG 99% 20 mt Hebei Chuanghai Biotechnology Co., Ltd
3,3'-Dimethyl-4,4'-biphenylene diisocyanate pictures 2025-12-24 3,3'-Dimethyl-4,4'-biphenylene diisocyanate
91-97-4
 US $0.00-0.00 / KG 1KG 99.0% 1000KG Shaanxi Dideu Medichem Co. Ltd
4,4`-Diisocyanato-3,3`-dimethylbiphenyl pictures 2025-12-01 4,4`-Diisocyanato-3,3`-dimethylbiphenyl
91-97-4
 US $0.00-0.00 / KG 1KG 98% 1000KG Shaanxi Dideu New Materials Co. Ltd

3,3'-Dimethyl-4,4'-biphenylene diisocyanate Spectrum

3,3'-Dimethyl-4,4'-biphenylene diisocyanate(91-97-4)MS3,3'-Dimethyl-4,4'-biphenylene diisocyanate(91-97-4)1HNMR3,3'-Dimethyl-4,4'-biphenylene diisocyanate(91-97-4)IR13,3'-Dimethyl-4,4'-biphenylene diisocyanate(91-97-4)IR2

91-97-4(3,3'-Dimethyl-4,4'-biphenylene diisocyanate)Related Search:

2-Bromotoluene Dimethyl ether Dimethyl phthalate Tolylene-2,4-diisocyanate Dimethyl fumarate
Dimethyl sulfide Isophorone diisocyanate N,N-Dimethylformamide Hexamethylene Diisocyanate 1,4-Phenylene diisocyanate
4,4'-Dimethylbiphenyl 2-Nitrotoluene ETHANE 2-Chlorotoluene 4-Nitrotoluene-2-sulfonic Acid
o-Xylene Dimethyl sulfoxide 4,4'-METHYLENEBIS(PHENYL ISOCYANATE)

1of4

3,3'-BITOLYENE-4,4'-DI-ISO-CYANATE 3,3'-BITOLYLENE-4,4'-DIISOCYANATE 3,3'-DIMETHYLBIPHENYL-4,4'-DIYL DIISOCYANATE 3,3'-DIMETHYLDIPHENYL-4,4'-DI-ISO-CYANATE 3,3'-DIMETHYL-4,4'-BIPHENYLENEIISOCYANATE 4,4’-biorthotolylenediisocyanate 4,4’-diisocyanato-3,3’-dimethyl-1,1’-biphenyl 4,4’-diisocyanato-3,3’-dimethyl-1’-biphenyl bitoluenediisocyanate bitolylenediisocyanate 1-isocyanato-4-(4-isocyanato-3-methyl-phenyl)-2-methyl-benzene 1-isocyanato-4-(4-isocyanato-3-methylphenyl)-2-methylbenzene 3,3'-Dimethyl-4,4'-b 3,3'-DIMETHYL-4 3,3-Dimethyl-4,4'-Diphenyl Diisocyanate 3,3'-Dimethyl-4,4'-biphenylene diisocyate isocyanicacid,3,3’-dimethyl-4,4’-biphenyleneester isocyanicacid,3,3’-dimethyl-4,4’-biphenylyleneester nacconate200 tolidinediisocyanate 4,4'-Diisocyanato-m,m'-bitolyl o-Tolidine diisocyanate dimethyl-biphenyl diisocyanate TODI 3,3'-ditolylene-4,4'-diisocyanate 33DIMETHYL44DIPHENYLENEDIISOCYANATE 3,3'-Dimethylbiphenyl-4,4'-Diyldiiso-Cyanate (TODI) (3,3'-Dimethyl-1,1'-biphenyl-4,4'-diyl)diisocyanate (3,3'-Dimethyl-4,4'-biphenylylene)bisisocyanate 3,3'-Dimethyl-1,1'-biphenyl-4,4'-diyldiisocyanate 3,3'-Dimethyl-4,4'-diisocyanatobiphenyl 3,3'-Dimethyl-4,4'-biphenyl diisocyanate 7-[5-[fluoro(methyl)phosphoryl]oxypentyl]-4-nitro-2,1,3-benzoxadiazole 4,4'-Diisocyanato-3,3'-dimethylbiphenyl> 4,4'-Diisocyanato-3,3'-dimethyL 4,4'-Diisocyanato-3,3'-dimethyl-1,1'-bipheny O-tolidine diisocyanate TODI 4，4‘-Diisocyanato-3，3‘-dimethylbiphenyl， ≥ 98.0% 4,4'-Diisocyanato-3,3'-dimethylbiphenyl 4,4'-Diisocyanato-3,3'-dimethyl-1,1'-biphenyl 3,3'-Dimethyl-4,4'-biphenylene diisocyanate N,N'-(3,3'-dimethylbiphenyl-4,4'-ylene)di(acetoacetamide) 3,3'-Dimethyl-4,4'-biphenylene diisocyanate 3,3'-dimethylbiphenyl-4,4'-diyl diisocyate -dimethylbiphenyl-4,4' -diyl diisocyanate 91-97-4 CH3OCNC6H32 CH3C6H42NCO2 ISOCYANATE Biphenyls (for High-Performance Polymer Research) Reagent for High-Performance Polymer Research other Biphenyls (for High-Performance Polymer Research) Functional Materials Reagent for High-Performance Polymer Research