Maleic anhydride

Physicochemical properties

Color and odor status: white crystals with a strong pungent odor                                      

Toxicity: low toxicity

Flammability: flammable

Density: 1.484

Corrosion: Corrosive to metal

Boiling point: 202℃ 

Decomposability: no decomposition

Stability: stable 

Melting point: 51-56℃

Alkalinity or acidity: weak acidity

Moisture absorption: moisture absorption

Flash point: 103.3℃


Solubility: soluble in most organic solvents such as water, acetone, benzene, chloroform, etc.

Various code

CAS: 108-31-6

HS: 2917140000

EINECS: 203-571-6


Used in the production of polyester resins, alkyd resins, medicines and pesticides, as well as ink additives, papermaking additives, coatings, pharmaceutical industry, food industry, etc.

Hazard category

8.1 acid corrosive products

Fire-fighting measures

Extinguishing methods: water mist, foam, carbon dioxide, sand, dry powder is prohibited

Emergency treatment

Skin contact: Take off contaminated clothing and immediately rinse with water for at least 15 minutes. If you have burns, seek medical attention

Eye contact: Lift the eyelid immediately and rinse with running water or normal saline for at least 15 minutes. Seek medical attention

Inhalation: quickly leave the scene to a place with fresh air. Keep the airway unobstructed. Give artificial respiration if necessary. Seek medical attention

Ingestion: If you take it by mistake, rinse your mouth immediately and drink milk or egg white. Seek medical attention

Packaging, storage, transportation

Packed in outer woven bag or kraft paper lined with plastic bag, net weight 25kg/bag, 50kg/bag; it can also be packed in plastic bag lined iron drum or wooden barrel, net weight 50kg/drum. Store in a cool, dry and well-ventilated warehouse. Prevent rain and sun. Keep away from fire and heat sources, and keep the container tightly closed. Avoid exposure to the sun, rain, and high temperature during transportation. Transport as required by dangerous goods


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