Cationic surfactant in toothbrush disinfection cabinet
It mainly includes quaternary ammonium salt, high concentration of coagulation protein and low concentration of inhibiting bacterial metabolism. It has the advantages of sterilization concentration, low toxicity, low irritation, no bleaching, no corrosion, no odor, good stability, good water solubility and so on. The bactericidal power is not strong, especially the effect on spores is not good, it is greatly affected by organic matter, and there are many taboos, which are its shortcomings. Domestic production has two sides of Xinjie, Ningning disinfection (Du Mi warehouse) and disinfection net. , The commonly used concentration is 0.5~1.0‰, which can be used for disinfection of skin, metal instruments, tableware, etc. Not suitable for disinfection of excreta and secretions.
5. Alkylated disinfectant
(1) Formalin
It is a 34-40% formaldehyde solution with strong bactericidal effect. The 1-3% solution can kill the propagation type of bacteria, and the 5% solution can kill spores for 90 minutes. Indoor fumigation and disinfection generally use 20ml/m3 plus measuring water for 10 hours to eliminate spore pollution. 80ml/m324 hours are needed to eliminate spore contamination. It is suitable for fur, man-made fibers, silk fabrics and other heat-resistant items. Due to its poor permeability and irritation, the disinfection items should be scattered. The house must be closed.
(2) Glutaraldehyde
The effect is similar to formaldehyde. It is more stable in acidic solution, but has poor sterilization effect. It can be stored in alkaline solution for 2 weeks, but it can greatly improve the sterilization effect, so 0.3% sodium bicarbonate is usually added to 2% valeraldehyde. Corrected pH compounds (enhanced bactericidal effect, can maintain stability for 18 months. Non-corrosive, with broad spectrum, fast-acting, high fever, low toxicity, etc., can be widely used to kill bacteria, spores and viruses Disinfection. Not suitable for disinfecting skin and mucous membranes.
(3) Ethylene oxide
It is a colorless liquid at low temperature with a boiling point of 10.8°C and a gas sterilizer at normal temperature. Its role is to destroy microbial proteins through alkylation. The general dosage at 15℃ is 0.4~0.7kg/m2, which lasts 12 to 48 hours. When the temperature is increased by 10℃, the sterilization capacity can be doubled, and the relative humidity of 30% is the best sterilization effect. It has the advantages of high activity, strong penetration, no damage to items and no residual poisons. Advantages, can be used to sterilize paper, books, cloth, fur, plastic, artificial fiber, metal products. Due to its strong penetration, it needs to be sterilized in a closed container. Keep away from open flames to prevent explosion. Ventilate after disinfection to prevent inhalation.
6. other
(1) Iodine
Interference with protein metabolism through halogenation. The effect is rapid and long-lasting, non-toxic, and almost not affected by organic matter. There are often sulfur wine and sulfur (sulfur and surfactant are indefinite combinations). Commonly used for skin and mucous membrane disinfection, emergency treatment of medical equipment.
(2) Chlorhexidine
It is a biguanide compound. It has a strong disinfection effect on bacteria. It can be used for disinfection of hands, skin, medical equipment, clothing, etc., and the common concentration is 0.2~1‰.