What kind of chemical substance is maleic anhydride? Today I'd like to introduce you. Maleic anhydride, also known as maleic anhydride, is often referred to as maleic anhydride. Maleic anhydride is a colorless crystal with strong pungent smell, boiling point 202 ℃, easy to sublimate. It is mainly prepared by oxidation of n-butane or butene, which is the raw material for the production of unsaturated polyester.

顺丁烯二酸酐

Maleic anhydride

毒性

toxicity

顺丁烯二酸酐能刺激皮肤及黏膜。当人接触高温液体时，其毒性更大，能造成皮肤灼伤，它会造成结膜、角膜红肿。它如果让人严重中毒会导致视力减退甚失明。经实验室试验数据是对大鼠经口LD50为400mg/kg。小鼠经口LC50为60～465mg/kg。顺丁烯二酸酐在空气中浓度不能太高，高允许浓度0.25mg/L

Maleic anhydride can stimulate skin and mucous membrane. When people come into contact with high temperature liquid, its toxicity is greater, can cause skin burns, it will cause conjunctiva, corneal swelling. If it makes people seriously poisoned, it will lead to vision loss and even blindness. The experimental data showed that the oral LD50 of rats was 400 mg / kg. The oral LC50 of mice was 60-465mg / kg. The concentration of maleic anhydride in the air should not be too high, and the high allowable concentration is 0.25mg/l

急救措施

First aid measures

皮肤接触顺丁烯二酸酐，就马上要脱去衣着，用大量清水冲洗，到医院。眼睛接触：立即提起眼睑，用大量流动清水或生理盐水彻底冲洗少15分钟就医。

In case of skin contact with maleic anhydride, take off your clothes immediately, rinse with plenty of water and go to the hospital for treatment. Eye contact: lift the eyelids immediately and rinse thoroughly with plenty of flowing water or normal saline for at least 15 minutes.