Physicochemical properties

Color and odor status: colorless to light yellow transparent liquid, pungent odor 

Toxicity: Poisoning   

Flammability: combustible       

Boiling point: 251℃

Stability: stable   

Melting point: 20°C    

Flash point: 132℃

Solubility: miscible with ethanol, ether, acetone, carbon tetrachloride, benzene, chlorobenzene, kerosene, olive oil and diethylene glycol methyl ether

Uses

Mainly used as a raw material for the production of polyurethane resins, used in the production of polyurethane foamed plastics, coatings, rubbers, adhesives, sealants, etc. It can also be used as a rubber vulcanizing agent, protein crosslinking agent, etc.

Hazard category

Class 6.1 Poisonous Products

Fire-fighting measures

Use dry powder, carbon dioxide, sand to extinguish the fire

Emergency treatment

Inhalation: quickly leave the scene to a place with fresh air, try to maintain a semi-upright position, give artificial respiration if necessary, and give medical care

Skin contact: Take off contaminated clothing immediately, rinse with running water, and seek medical attention

Eye contact: immediately lift the eyelids, rinse thoroughly with a large amount of running water or normal saline, and seek medical attention

Ingestion: Drink enough warm water to induce vomiting, seek medical attention

Packaging, storage, transportation

Packed in galvanized iron drum, net weight 250kg/drum. Storage and transportation conditions: sealed with argon or nitrogen, kept in a cool, dry and dark place, and the storage temperature is controlled at 20-35°C. The temperature does not exceed 45℃. Keep away from heat and fire sources, and store and transport separately from amines, alcohols, alkalis and water-containing items. It must not be transported with food and feed. Transport as required by dangerous goods

Note: The color becomes darker under sunlight. Its vapor is heavier than air. MDI and TDI are substitutes for each other, and both are raw materials for the production of polyurethane. The price of MDI is slightly lower, and its toxicity is lower than that of TDI, but the density is higher than that of TDI system when producing foam, and the moldability of polyurethane products formed by MDI is relatively better.