国产日本卡二卡三卡四卡,免费国产理论视频,三级亚洲中文字幕,日韩av片高清在线观看

[Shandong paraformaldehyde] harmful have you become favorable

Shandong paraformaldehyde is made of formaldehyde dehydration, concentration and drying. Its production is divided into two steps: first, 37% of formaldehyde is heated under negative pressure to remove part of the water, concentrated into 65%-70% of concentrated aldehyde polymerization under the condition of alkaline catalysis, and then the finished product is obtained through drying.

Shandong paraformaldehyde first aid measures:

1. First Aid measures:

Skin contact: Remove contaminated clothing and rinse thoroughly with soapy water and clean water.

Eye contact: Immediately lift eyelids and rinse with running water or saline for at least 15 minutes.Seek medical attention.

Inhalation: Quickly leave the scene to fresh air.Keep your airways open.Give oxygen when breathing is difficult.If respiration stops, immediately give artificial respiration and seek medical attention.

Ingestion: Drink plenty of warm water to induce vomiting and seek medical attention.

Fire extinguishing method: mist water, foam, carbon dioxide, dry powder, sand.

2. Use: paraformaldehyde is mainly used in the production and use of herbicides, but also used to make synthetic resins (such as artificial horn products or artificial ivory) and adhesives.Paraformaldehyde is also used in pharmaceutical industry and pharmacy, clothing and bedding disinfection, paraformaldehyde can also be used as fumigation disinfectant, fungicide and insecticide.