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Article: what disinfectant to use for killing virus COVID-19

Article: what disinfectant to use for killing virus COVID-19 1

Disinfectant is a preparation used to kill microorganisms on the transmission medium to meet the requirements of disinfection or sterilization. According to the National Health and Medical Commission, new type of coronavirus(COVID-19) is sensitive to ultraviolet rays and heat. Lipid solvents such as ether, 75% ethanol, chlorine-containing disinfectant, peracetic acid, and chloroform can effectively kill the virus of COVID-19.

Common disinfectants:

Alcohol disinfectants (such as alcohol)
1. Active ingredients:
The content of ethanol is 70% ~ 80% (v / v), the alcohol-containing hand disinfectant is> 60% (v / v), and the compound product can be based on the product manual.
2.Scope of application:
It is mainly used for disinfection of hands and skin. It can also be used for disinfection of small objects.
3. How to use:
(1) Hygiene hand disinfection: Spray or wash your hands or rub your hands evenly 1 or 2 times for 1 minute.
(2) Disinfection of surgical hands: wipe 2 times for 3 minutes.
(3) Disinfection of the skin: Rub the surface of the skin 2 times for 3 minutes.
(4) Disinfection of the surface of small objects: Wipe the surface of the object 2 times for 3 minutes.
4, matters for attention:
(1) If using alcohol alone for hand disinfection, it is recommended to use hand cream after disinfection.
(2) Disinfectant for external use should not be taken orally and should be placed out of children’s reach.
(3) Keep flammable items away from fire sources.
(4) Use with caution to those who are allergic to alcohol.
(5) Store in a cool, dry, ventilated place in a dark place away from light.
(6) Not suitable for disinfecting the surface of fat-soluble objects, not for air disinfection.
Chlorine-containing disinfectant
1. Active ingredients:
Calculated in terms of available chlorine, the content is expressed in mg / L or%, bleaching powder ≥20%, sodium dichloroisocyanurate ≥55%, 84 disinfectant according to the product instructions, it is usually 2% ~ 5%.
2.Scope of application:
Suitable for disinfecting the surface of objects, fabrics and other contaminated items, as well as water, fruits and vegetables and tableware for drinking and drinking; in addition to the above-mentioned uses, hypochlorous acid disinfectants can also be used for disinfecting the surfaces, hands, skin and mucous membranes of indoor air and secondary water supply facilities .
3. How to use:
(1) Disinfection of the surface of the object: Use a concentration of 500mg / L.
(2) Disinfection at the epidemic source: Use a concentration of 1000 mg / L on the surface of the object. When there are obvious pollutants, use a concentration of 10,000 mg / L.
(3) Other disinfection of indoor air and water: According to the product manual.
4, matters for attention:
(1) Disinfectants for external use must not be taken orally and placed out of children’s reach.
(2) Masks and gloves should be worn when preparing and dispensing high-concentration disinfectant solutions.
(3) Gloves should be worn during use to avoid contact with the skin; if accidentally splashed into the eyes, rinse immediately with water, and if serious, consult a doctor.
(4) It has a corrosive effect on metal and a bleaching and fading effect on fabric. Use with caution on metal and colored fabrics.
(5) Strong oxidants shall not be in contact with flammable materials and shall be kept away from fire sources.
(6) Keep it in a cool, dry place and keep it in a sealed place. Do not store or transport it together with reducing substances.
(7) The packaging shall be marked with corresponding safety warning signs.
(8) Use in accordance with the scope of use, method of use, validity period and safety test results indicated in the specific product manual.
Chlorine dioxide disinfectant
1. Active ingredients:
After activation, the content of chlorine dioxide is ≥2000mg / L; there is no need to activate the product;
2.Scope of application:
Suitable for disinfection of water (drinking water, hospital sewage), surface of objects, food and drinking utensils, food processing tools and equipment, fruits and vegetables, medical equipment (including endoscopes) and air.
3. How to use:
(1) Disinfection of the surface of the object: Use a concentration of 50mg / L ~ 100mg / L for 10-15 minutes.
(2) Disinfection of drinking water: Use a concentration of 1mg / L ~ 2mg / L for 15-30 minutes.
(3) Hospital sewage disinfection: use the concentration of 20mg / L ~ 40mg / L for 30 ~ 60 minutes.
(4) Indoor air disinfection: According to product instructions.
4, matters for attention
(1) Disinfectants for external use must not be taken orally and placed out of children’s reach.
(2) It should not be mixed with other disinfectants, alkalis or organic substances.
(3) This product has a bleaching effect; it is corrosive to metals.
(4) Wear gloves when using to avoid high concentration disinfectant from contacting the skin and inhalation of the respiratory tract. If accidentally splashed into the eyes, rinse immediately with water. Seek medical attention if serious.
Peroxide disinfectants
1. Active ingredients:
Hydrogen peroxide disinfectant: The mass fraction of hydrogen peroxide (calculated as H2O2) is 3% to 6%.
Peroxyacetic acid disinfectant: The mass fraction of peroxyacetic acid (based on C2H4O3 ) is 15% to 21%.
2.Scope of application:
It is suitable for disinfecting the surface of objects, indoor air, skin wounds and corrosion-resistant medical equipment.
3. How to use:
(1) Object surface: 0.1% ~ 0.2% peroxyacetic acid or 3% hydrogen peroxide, spray or soak for 30 minutes, and then rinse with water to remove residual disinfectant.
(2) Indoor air disinfection: 0.2% peroxyacetic acid or 3% hydrogen peroxide, using aerosol spray method, the dosage is calculated according to 10mL / m3 ~ 20mL / m3 (1g / m3) , ventilation and ventilation after 60 minutes of disinfection; You can also use 15% peroxyacetic acid for heating and fumigation, the dosage is calculated as 7mL / m3 , and the fume will be ventilated for 1 to 2 hours.
(3) Skin wound disinfection: 3% hydrogen peroxide disinfectant directly rinses the skin surface for 3 to 5 minutes.
(4) Medical device disinfection: high-level disinfection of corrosion-resistant medical devices, immersion in 6% hydrogen peroxide for 120 minutes, or rinsing in 0.5% peroxyacetic acid for 10 minutes. After disinfection, rinse with sterile water to remove residual disinfectants. .
4, matters for attention:
(1) Liquid peroxide disinfectants are corrosive, irritating to eyes, mucous membranes, and skin, and there is a danger of burns. If accidentally contacted, they should be washed with plenty of water and seek medical treatment in a timely manner.
(2) When carrying out disinfection, personal protective equipment should be worn.
(3) If the container ruptures or leaks, use a large amount of water to flush, or absorb the residual liquid with sand or inert absorbent, and take corresponding safety protection measures.
(4) It is flammable and explosive. It will cause combustion and explosion when it is exposed to open flames and high heat. If it comes in contact with the reducing agent, it will explode when it encounters metal powder.
Iodine-containing disinfectants
1. Active ingredients:
Iodine tincture: Effective iodine 18g / L ~ 22g / L, ethanol 40% ~ 50%.
Iodine volts: Available iodine 2g / L ~ 10g / L.
2.Scope of application:
(1) Iodine tincture: It is suitable for disinfecting the skin of the surgical site, injection and puncture sites, and neonatal umbilical cord. It is not suitable for disinfecting the skin of mucous membranes and sensitive areas.
(2) Iodine: suitable for surgical hand and forearm disinfection, mucosal irrigation and disinfection.
3. How to use:
(1) Iodine tincture : Dip this product with a sterile cotton swab or sterile gauze, wipe the skin on the disinfected part more than 2 times, and then wipe off the iodine with 75% medical ethanol with a cotton swab or sterile gauze. Use effective iodine 18mg / L ~ 22mg / L, the action time is 1-3 minutes.
(2) Iodine : 1) Disinfection of the hand and forearm before surgery : On the basis of conventional brushing, use a sterile gauze to dip and use the concentration of iodophor to wipe evenly from the tip of the finger to the skin of the forearm and lower 1/3 ; Or directly use a sterile brush to dip and use the concentration of iodophor to brush the hand from the tip of the finger to the skin of the lower third of the forearm and upper arm, then wipe dry. Use effective iodine 2g / L ~ 10g / L, effect for 3 ~ 5 minutes. 2) Mucosal rinsing and disinfection : Iodine diluent containing 250mg / L to 500mg / L of effective iodine is used to directly rinse or wipe the disinfected part.
4, matters for attention:
(1) Oral disinfection is prohibited.
(2) Keep out of reach of children.
(3) Use with caution to those allergic to iodine.
(4) sealed and protected from light, stored in a cool and ventilated place.
Bromine-containing disinfectants
1. Active ingredients:
Bromochloro-5,5-dimethylhydantoin, with a mass fraction of 92% to 95%, and an effective halogen (calculated as Cl) mass fraction of 54% to 56%. 1,3-dibromo-5,5-dimethylhydantoin, mass fraction of 96% to 99%, effective bromine (calculated as Br) mass fraction of 107% to 111%.
2.Scope of application:
Suitable for disinfecting the surface of objects.
3. How to use:
Soaking, wiping, or spraying are commonly used to disinfect the surface of objects. Bromochloro-5,5-dimethylhydantoin Total effective halogen 200mg / L ~ 400mg / L, acting for 15-20 minutes; 1,3-dibromo-5,5-dimethylhydantoin is effective Bromine 400mg / L ~ 500mg / L, acting for 10-20 minutes.
4, matters for attention:
(1) Bromine-containing disinfectants are external products and must not be taken orally.
(2) This product is a strong oxidant. Contact with flammable materials can cause no flames to spontaneously ignite. Keep away from flammable materials and fire sources.
(3) It is forbidden to co-storage and transport with the reductants to prevent explosion.
(4) Products without added anticorrosive are corrosive to metals.
(5) It has bleaching and fading effect on colored fabrics.
(6) This product has an irritating odor, and there is a danger of burns to the eyes, mucous membranes and skin. Contact with the human body is strictly prohibited. In case of accidental contact, it should be washed with plenty of water in time, and in severe cases, go to the hospital for treatment.
(7) Operators should wear protective equipment such as protective glasses and rubber gloves.
Phenol disinfectant
1. Active ingredients
According to the product manual.
2.Scope of application
Suitable for disinfecting the surface of objects and fabrics.
3. How to use
The surface of the object and fabric are wiped and disinfected with 1000mg / L ~ 2000mg / L of active ingredient for 15-30 minutes.
4, matters for attention
(1) Phenol and cresol are toxic to the human body. When disinfecting the environment and the surface of the object, personal protection should be done. If high-concentration solutions contact the skin, they can be wiped off with ethanol or rinsed with plenty of water.
(2) After the disinfection is finished, the surface of the treated object, the fabric and other objects should be wiped or washed with clean water to remove the residual disinfectant.
(3) Can not be used for disinfection of bacterial and spore-contaminated items, and can not be used for high-medium level disinfection of medical equipment. The disinfectants with phenol and cresol as the main bactericidal component are not suitable for skin and mucous membrane disinfection.
Quaternary ammonium salt disinfectants
1. Active ingredients
According to the product manual.
2.Scope of application
It is suitable for disinfection of the environment and the surface of objects (including fibers and fabrics); at the same time, it is also suitable for sanitary hand disinfection. The disinfectant compounded with alcohol can be used for surgical hand disinfection.
3. How to use
(1) Disinfection of the surface of the object : When there is no obvious pollutant, the concentration is 1000mg / L; when there is obvious pollutant, the concentration is 2000mg / L.
(2) Sanitary hand disinfection : Use 1000mg / L for cleaning and 2000mg / L for contamination.
4, matters for attention
(1) Disinfectants for external use must not be taken orally. Keep out of reach of children.
(2) Avoid contact with organics and antagonists. Do not use with soap or other anionic detergents, nor with iodine or peroxide (such as potassium permanganate, hydrogen peroxide, sulfa powder, etc.).

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