Polyvinyl alcohol: organic compound, white flake, flocculent or powdery solid, tasteless. Soluble in water (above 95℃), slightly soluble in dimethyl sulfoxide, insoluble in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol, etc.
Polyvinyl alcohol is an important chemical raw material, which is used to make polyvinyl acetal, gasoline-resistant pipeline and vinylon synthetic fiber, fabric treatment agent, emulsifier, paper coating, adhesive, glue and so on.
On October 27th, 2065438+071KLOC-0, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization was preliminarily sorted out for reference, and polyvinyl alcohol was in the list of three types of carcinogens.
Extended data:
Harm of polyvinyl alcohol:
Health hazards: Inhalation and intake are harmful to the body and irritating to the eyes.
Danger of explosion: This product is flammable and irritating.
First aid measures:
Skin contact: Take off contaminated clothes and rinse with running water.
Eye contact: Lift eyelids and rinse with running water or normal saline. See a doctor.
Inhalation: Leave the site and go to a place with fresh air. If you have difficulty breathing, give oxygen. See a doctor.
Intake: Drink enough warm water to induce vomiting. See a doctor.
Fire prevention measures:
Hazard characteristics: Powder and air can form explosive mixture. When it reaches a certain concentration, it will explode when it meets Mars. Combustible gas is produced by thermal decomposition.
Harmful combustion products: carbon monoxide and carbon dioxide.
Fire extinguishing method: Firefighters must wear gas masks and full-body fire protection suits to extinguish the fire in the upwind direction. Extinguishing agent: atomized water, foam, dry powder, carbon dioxide, sand.
References:
Baidu encyclopedia-polyvinyl alcohol