Brief introduction of ethanol: ethanol, with simple structural formula, CH3CH2OH or C2H6O, is an alcohol. Organic compounds, commonly known as alcohols, are the most common monohydric alcohols. It is a colorless and transparent liquid, flammable and volatile at normal temperature and pressure, and has a special fragrance (slightly irritating). It is a common fuel, solvent and disinfectant, and also used in organic synthesis. Ethanol and methyl ether are isomers.

Alcohol is an anesthetic that stimulates the brain and turns off its inhibitory function. When the brain can't bear the stimulation of alcohol, it will take a short rest, and after the important part of the brain responsible for memory is paralyzed by alcohol, there will be short-term amnesia.

1. combustion method: it is a simple, rapid and thorough sterilization method. Commonly used for tetanus and gas gangrene pollution. Sharp knives and scissors are forbidden.

2. Boiling disinfection method: it is suitable for items with moisture resistance and high temperature resistance, such as metal, enamel, glass and rubber.

3. Pressure steam sterilization: the best method of thermal sterilization. Usually used for sterilization of high temperature, high pressure and moisture-proof articles, such as various instruments, dressings, enamels, glass, rubber products and solutions.

Combustion sterilization is suitable for:

Items that do not need to be preserved, such as pathological specimens, corpses, discarded clothes, paper, medical waste, etc., can be put into an incinerator for incineration or directly ignited. The sterilization of inoculation ring and test tube mouth in microbiology laboratory is directly burned on the flame.

There is an urgent need for some metal equipment and enamel items. It needs to be cleaned and dried before sterilization. Metal appliances can burn on a flame for 20 seconds. Solvents such as enamel can be poured into a small amount of ethanol above 95%, and slowly rotated to make the solvent evenly distributed. The fire burned until it went out. Be careful not to add a layer of igniter in the middle of the disinfection container to keep away from flammable and explosive materials to ensure safety.

Contaminated articles without reservation value, such as contaminated paper, dressings infected with tetanus and gas gangrene, etc. ; When metal instruments and enamel articles are urgently needed (except sharp knives and scissors, so as not to blunt the edges).