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

CAS NO.：91-97-4
Empirical Formula: C16H12N2O2
Molecular Weight: 264.28
MDL number: MFCD00019908
EINECS: 202-112-7
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-22 13:59:06

What is 3,3'-Dimethyl-4,4'-biphenylene diisocyanate?

The Uses of 3,3'-Dimethyl-4,4'-biphenylene diisocyanate

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.

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

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

Safety information for 3,3'-Dimethyl-4,4'-biphenylene diisocyanate

Signal word	Danger
Pictogram(s)	Exclamation Mark Irritant GHS07 Health Hazard GHS08
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H334:Sensitisation, respiratory H341:Germ cell mutagenicity
Precautionary Statement Codes	P201:Obtain special instructions before use. P202:Do not handle until all safety precautions have been read and understood. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P284:Wear respiratory protection. P308+P313:IF exposed or concerned: Get medical advice/attention. P405:Store locked up. P501:Dispose of contents/container to..…