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

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

Product Name
3,3'-Dimethyl-4,4'-biphenylene diisocyanate
CAS No.
91-97-4
Chemical Name
3,3'-Dimethyl-4,4'-biphenylene diisocyanate
Synonyms
TODI;nacconate200;3,3'-DIMETHYL-4;3,3'-Dimethyl-4,4'-b;tolidinediisocyanate;bitoluenediisocyanate;bitolylenediisocyanate;o-Tolidine diisocyanate;O-tolidine diisocyanate TODI;4,4'-Diisocyanato-m,m'-bitolyl
CBNumber
CB2485599
Molecular Formula
C16H12N2O2
Formula Weight
264.28
MOL File
91-97-4.mol
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3,3'-Dimethyl-4,4'-biphenylene diisocyanate Property

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℃
CAS DataBase Reference
91-97-4(CAS DataBase Reference)
EPA Substance Registry System
3,3'-Dimethyl-4,4'-diphenylene diisocyanate (91-97-4)
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Safety

RTECS 
DV3960000
HS Code 
29291090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

H341Suspected of causing genetic defects

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P284Wear respiratory protection.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
S360902
Product name
3,3'-DIMETHYL-4,4'-BIPHENYLENE DIISOCYANATE
Purity
Aldrich<sup>CPR</sup>
Packaging
1 unit
Price
$185
Updated
2025/07/31
Sigma-Aldrich
Product number
S360902
Product name
3,3'-DIMETHYL-4,4'-BIPHENYLENE DIISOCYANATE
Purity
Aldrich
Packaging
250mg
Price
$179
Updated
2024/03/01
TCI Chemical
Product number
D2051
Product name
4,4'-Diisocyanato-3,3'-dimethylbiphenyl
Purity
>98.0%(GC)
Packaging
25g
Price
$73
Updated
2025/07/31
TCI Chemical
Product number
D2051
Product name
4,4'-Diisocyanato-3,3'-dimethylbiphenyl
Purity
>98.0%(GC)
Packaging
250g
Price
$434
Updated
2025/07/31
TRC
Product number
D452168
Product name
4,4''-Diisocyanato-3,3''-dimethylbiphenyl
Packaging
5g
Price
$50
Updated
2021/12/16
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3,3'-Dimethyl-4,4'-biphenylene diisocyanate Chemical Properties,Usage,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

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

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

Hebei Chuanghai Biotechnology Co., Ltd
Product
3,3'-Dimethyl-4,4'-biphenylene diisocyanate 91-97-4
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20 mt
Release date
2024-11-22
Henan Aochuang Chemical Co.,Ltd.
Product
3,3'-Dimethyl-4,4'-biphenylene diisocyanate 91-97-4
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
1ton
Release date
2022-10-13
Shaanxi Dideu New Materials Co. Ltd
Product
4,4`-Diisocyanato-3,3`-dimethylbiphenyl 91-97-4
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
1000KG
Release date
2024-11-10

91-97-4, 3,3'-Dimethyl-4,4'-biphenylene diisocyanateRelated Search:

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

  • 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&gt
  • 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
  • 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