While chemistry brings convenience, the unknown field of chemistry also brings us some panic. Are chemicals harmful to human beings?

Not all chemicals are harmful, but they are specially researched and produced for some purposes. There are chemicals specially produced to treat diseases, which cannot be called harmful substances. Of course, among all kinds of chemicals, many are toxic chemicals, which may cause harm to human body, organs and even life and health during production, use, storage and transportation.

In fact, polymer compounds themselves are non-toxic or highly toxic, but in the process of processing and use, free monomers will be released to cause harm to human body, and some polymer compounds will produce more toxic substances due to thermal oxidation.

We need to know the basic knowledge of toxic chemicals and their harm to human body, and take effective preventive measures against toxic chemicals.