Fighting the pandemic together | How to properly utilize the disinfecting function of 84 disinfectant, and what precautions should be taken in the laundry industry?
Release Time:
2020-02-04 19:07
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During the Spring Festival, the novel coronavirus pneumonia spread rapidly, and the prevention and control situation was extremely severe. With masks, alcohol, and other protective supplies sold out in medical institutions across the country, 84 disinfectant is becoming the preferred product for the public to carry out disinfection. How can 84 disinfectant be used correctly, and what precautions should the laundry industry take? Let's find out.
Origin of 84 Disinfectant
In 1984, Beijing First Infectious Disease Hospital (the predecessor of Ditan Hospital) successfully developed a disinfectant that could quickly kill various hepatitis viruses. After expert appraisal organized by the Beijing Municipal Health Bureau, it was awarded the second prize for application achievements and named "84" hepatitis disinfectant, later renamed "84 disinfectant," now appearing on store shelves in various forms and brands.
Why is 84 Disinfectant Considered Almost "Omnipotent"?
84 disinfectant is a highly effective disinfectant with sodium hypochlorite (NaClO) as the main ingredient. It is a colorless or pale yellow liquid with an effective chlorine content of 5.5–6.5% and has a pungent odor. Carbon dioxide (CO2) in the air dissolves in 84 disinfectant and reacts with sodium hypochlorite to produce hypochlorous acid, which has bleaching properties and thus exerts a disinfecting effect. It is widely used in hotels, tourism, hospitals, food processing industries, and daily household disinfection.
If Used Improperly, "Disinfection" Can Easily Become "Poisoning"
84 disinfectant itself has a wide range of disinfection uses. Its bleaching effect mainly comes from hypochlorous acid (HClO), a weak acid with strong oxidizing properties that can oxidize most substances to denature them and achieve disinfection. However, because 84 disinfectant contains chlorine, it has certain irritant and corrosive properties and easily volatilizes toxic chlorine gas when exposed to air.
Once chlorine gas enters the human body through the respiratory tract, it reacts chemically with moisture in the respiratory mucosa to form hypochlorous acid and hydrochloric acid, which can cause inflammatory swelling of the respiratory mucosa, leading to breathing difficulties and severe coughing. In serious cases, it can cause pulmonary edema, affect lung circulation, and even lead to respiratory failure and death. Chlorine gas entering the body through the esophagus can cause poisoning symptoms such as nausea, vomiting, chest pain, and diarrhea.
Additionally, if protective measures are not used during application, it can cause significant irritation to the skin on the hands. Residues of 84 disinfectant can contaminate water sources and pose certain risks of carcinogenicity, teratogenicity, and genetic mutation, causing great harm to the human body.
1. Wear protective masks and gloves
84 disinfectant is corrosive and irritating to the skin and oral mucosa. Direct contact with the undiluted solution can cause slight pain.
2. Three essential elements for effective disinfection
Disinfection method, disinfectant concentration, and contact time are the three essential elements for effective disinfection; none can be omitted. Before use, carefully read the instructions and prepare the disinfectant at the appropriate concentration according to the actual purpose.
Disinfectant concentration is not better the higher it is; excessively high concentrations neither achieve effective disinfection nor prevent environmental pollution.
3. Organic matter affects disinfection effectiveness
Sodium hypochlorite is easily affected by organic matter (such as blood, bodily fluids), which reduces its bactericidal ability and affects disinfection effectiveness. If organic matter is present, cleaning must be done before disinfection.
4. Remember to rinse thoroughly after disinfection
Residues of 84 disinfectant can cause certain harm to the human body. Therefore, after disinfecting utensils, tea sets, kitchen cutting boards, children's plastic toys, and other items with 84 disinfectant, they must be rinsed repeatedly with clean water.
5. Laundry bleaching
When used for bleaching, the disinfectant must be appropriately diluted. However, 84 disinfectant should not be used on silk, wool, nylon, leather surfaces, or colored fabrics, as it may cause fading. A test should be done in a hidden area before use.
6. Do not mix with other disinfectants
84 disinfectant must never be mixed with toilet cleaners. The main ingredient of 84 disinfectant—sodium hypochlorite (NaClO)—reacts chemically with the main ingredient of toilet cleaners—hydrochloric acid (HCl)—to produce chlorine gas. Chlorine gas is an irritant that damages the respiratory tract. Inhaling large amounts causes coughing, breathing difficulties, and dizziness. At concentrations of 3000 mg/m³, it can be fatal. Mixing two full bottles of such substances produces enough chlorine gas to threaten life.
Warm Reminder
During the prevention and control of novel coronavirus pneumonia, many people have started paying attention to household disinfection and purchased many disinfectants! There are those for laundry, hand washing, and air disinfection! Please carefully read the instructions and do not misuse!
Friendly reminder from senior laundry industry experts to all laundry workers: 84 disinfectant and other products containing "sodium hypochlorite" should not be used on "wool, silk, or colored" clothing. Such disinfectants can severely damage fabric materials, causing irreversible loss. Please take this seriously!
Source: Shanghai CDC
Laundry Industry Expert Reminder
Image source: Shanghai CDC
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