Including chlorine-containing disinfectants and peroxide-based disinfectants. Because of its strong disinfection, it is widely used in medical and epidemic prevention.

(1) Bleaching powder

Most widely used. The main component is calcium hypochlorite, effective 25 ~ 30%, unstable, can be decomposed by light, heat, moisture and CO2. Therefore, it should be kept in a dark and dry place for no more than 1 year. The active ingredient hypochlorous acid can infiltrate cells, oxidize the sulfur hydrogen gene of cell enzyme, destroy cytoplasmic metabolism. Strong and rapid bactericidal force in acidic environment, high concentration can kill buds, powder used for dung, sputum, pus disinfection. Add 200 grams of dry powder per liter, stir evenly, place for 1 to 2 hours, add 5 grams of dry powder per liter of urine, place for 10 minutes. In addition to disinfecting excreta and secretions, 10-20% emulsion can be used to spray toilets, contaminated vehicles, etc. If stored for a long time, the actual effective chlorine content should be measured, and the amount of preparation should be corrected. Bleach powder and tablets contain 60 ~ 70% effective chlorine, which can be reduced proportionally when used.

(2) chloramine -- T

It is an organic chlorine disinfectant, containing 24 ~ 26% effective chlorine, stable, closed for 1 year, only 0.1% effective chlorine loss. Slightly soluble in water (12%), less irritating and corrosive, action is slower than hypochlorous acid. 0.2%, 1 hour can kill bacterial reproduction, 5%, 2 hours can kill tuberculosis bacilli, killing bud takes more than 10 hours. Various ammonium salts can promote its bactericidal action. 1 ~ 2.5% solution also has an effect on hepatitis virus. Active liquid must be prepared 1 ~ 2 hours before, time is too long, the bactericidal effect is reduced.

(3) sodium dichloroisocyanurate

Also known as optimal chlorine net, widely used organic chlorine disinfectant, containing chlorine 60 ~ 64.5%. It has the advantages of high efficiency, wide spectrum, stability, high solubility and low toxicity. Aqueous solution can be used for spraying, soaking, wiping, dry powder can also be used directly to disinfect pollutants, treatment of feces and other excreta, the same as bleaching powder. Spray directly on the ground with a dose of 10 ~ 20g/m^2. Mixed with polyformaldehyde powder ignited, gas can be fumigated disinfection, and 92 coagulant (hydroxyl aluminum chloride based on iron powder, sulfuric acid, hydrogen peroxide synthesis) to 1:4 mixed into "water clear", for drinking water disinfection. And can be prepared with sodium sulfonate into a variety of disinfection washing liquid, such as Dijingmei, youchlorojing and so on. Have exterminating effect to hepatitis virus. In addition, there are three sodium chloride phosphate, chlorobromodicyanuric acid and other effects the same.

(4) peroxyacetic acid

Also acetic acid peroxide, colorless transparent liquid, volatile stimulating acidity, is a kind of quick disinfectant effect, soluble in water and organic solvents such as ethanol, has the corrosion effect of bleaching, volatile excitant acid, is an effective and available disinfectant, soluble in water and organic solvents such as ethanol, bleaching and corrosion effect, sex is not stable, when it is heated, organic matter, Heavy metal ions, strong bases and so on are easily decomposed. 0.01 ~ 0.5%, 0.5 ~ 10 minutes can kill bacterial reproduction, 1%, 5 minutes can kill bud cells, commonly used concentration of 0.5 ~ 2%, can be soaked, sprayed, wipe and other methods for disinfection, under closed conditions for aerosol (5% concentration, 2.5ml/m^2) and fumigation (0.75 ~ 1.0g/m^3) disinfection.

(5) Chlorine peroxide

3% ~ 6% solution, 10 minutes can be disinfected.

10% ~ 25%, 60 minutes, can be sterilized, used for heat resistant plastic products, tableware, clothing and other disinfection.

10% overheated hydrogen deep glue spray can sterilize indoor contaminated surface, (180 ~ 200) ml/m^3, 30 minutes can kill bacterial propagation, 400ml/m^3, 60 minutes can kill buds.

(6) manganese potassium

Soak in 1% ~ 5% concentration for 15 minutes, can kill bacterial reproduction, often used for tableware, melon and fruit disinfection.