3,3'-DIMETHOXY-4,4'-BIPHENYLENE DIISOCYANATE Property

Melting point:

112-116 °C(lit.)

Boiling point:

437.88°C (rough estimate)

Density 

1.2288 (rough estimate)

refractive index 

1.5800 (estimate)

Flash point:

170 °F

Stability:

Stable, but air and water sensitive. Incompatible with strong oxidizing agents, strong acids.

IARC

3 (Vol. 39, Sup 7) 1987

EPA Substance Registry System

3,3'-Dimethoxybenzidine-4,4'-diisocyanate (91-93-0)

Safety

Hazard Codes 

T

Risk Statements 

23/24/25

Safety Statements 

26-36-45

RIDADR 

UN 2811 6.1/PG 2

WGK Germany 

3

RTECS 

NQ8800000

Hazardous Substances Data

91-93-0(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H301Toxic if swalloed

H311Toxic in contact with skin

H331Toxic if inhaled

Precautionary statements

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.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P311Call a POISON CENTER or doctor/physician.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P321Specific treatment (see … on this label).

P322Specific measures (see …on this label).

P330Rinse mouth.

P361Remove/Take off immediately all contaminated clothing.

P363Wash contaminated clothing before reuse.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

3,3'-DIMETHOXY-4,4'-BIPHENYLENE DIISOCYANATE Chemical Properties,Usage,Production

Chemical Properties

grey to brown powder

Definition

ChEBI: 3,3'-Dimethoxybenzidine-4,4'-diisocyanate is a member of biphenyls.

General Description

Gray to brown powder or dark beige sandy powder. Melting point 112°C. Insoluble in water. Toxic by inhalation and ingestion. A skin irritant. Used in making plastics.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

3,3'-DIMETHOXY-4,4'-BIPHENYLENE DIISOCYANATE may react with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizing agents, hydrides, phenols, and peroxides with vigorous releases of heat. May undergo polymerization reactions with acids and bases.

Fire Hazard

Flash point data for 3,3'-DIMETHOXY-4,4'-BIPHENYLENE DIISOCYANATE are not available; however, 3,3'-DIMETHOXY-4,4'-BIPHENYLENE DIISOCYANATE is probably combustible.

Safety Profile

Poison by intravenous route. A strong sensitizer. Questionable carcinogen with experimental carcinogenic data. When heated to decomposition it emits toxic fumes of NOx. See also CYANATES.