Chemical raw materials methylene chloride is mixed with high-concentration oxygen to form an explosive mixture, which is miscible with most common organic solvents, and can also be miscible with other chlorine-containing solvents, ether and ethanol in any proportion. It is used as a reaction medium in the pharmaceutical industry for the preparation of ampicillin, oxypicillin and cephalosporin, etc. It is also used as a solvent in film production, petroleum dewaxing solvent, aerosol propellant, organic synthesis extractant, polyurethane and other foams Foaming agent and metal cleaning agent for plastic production.

What should I do if I have Chemical raw materials methylene chloride stuck to my hands? It will slowly decompose in contact with water to produce hydrogen chloride, which can be wiped off with a paper towel or rag. It is colorless and transparent liquid with fragrant odor, slightly soluble in water, soluble in ethanol and ether. When it touches the epidermis of the hand, the epidermis will be slightly whitish (may be related to degreasing), and it is no problem to splash a few drops or a few milliliters on the hand. It has anesthetic effects, mainly damages the central nervous system and respiratory system, and the main route of human exposure is inhalation.

The first aid measures for contact with chemical raw materials methylene chloride are divided into skin contact, which requires removing contaminated clothing and washing the skin thoroughly with soap and water. In case of eye contact, lift the eyelids, rinse with running water or normal saline, and seek medical attention afterwards. When inhaling, quickly leave the scene to fresh air. Keep the airway open. If breathing is difficult, give oxygen, if breathing stops, give artificial respiration immediately and seek medical attention.