Precautions for safe use of alcohol disinfection

Release time:

2020-02-14 17:16

In the face of the recent pneumonia epidemic of novel coronavirus infection, in addition to wearing masks and washing hands frequently, how to disinfect scientifically, correctly and safely has also become a topic of concern.

The new coronavirus belongs to the enveloped lipophilic RNA virus, alcohol as a common alcohol disinfectant, can coagulate proteins, resulting in microbial death, belongs to the effective disinfectant, can kill bacterial propagules, destroy most lipophilic viruses, so as to achieve the role of eliminating the virus.

Alcohol disinfection and sterilization, to prevent the "new crown pneumonia" epidemic has an important role, is a common solution for home disinfection. However, if used improperly, it may cause harm to the body and even cause fire. First of all, if you want alcohol to inactivate the virus, you need to use a certain concentration of alcohol and act for a certain period of time, usually 1-3 minutes. Secondly, the use method also needs attention, it is not recommended to use alcohol spraying to disinfect.

Alcohol can disinfect and sterilize, but it is necessary to select a suitable concentration to effectively sterilize. If the alcohol concentration is too low, even if the alcohol can penetrate into the bacterial virus, it cannot coagulate the virus in the body and cannot achieve the effect of inactivating bacteria. Ethanol with a concentration of 70% to 75% is an effective antivirus, which can penetrate into the bacterial virus body and solidify the virus in the body. Therefore, experts recommend using 75% alcohol as a disinfectant. However, more than 90% of the alcohol concentration will make the virus surface protein instant denaturation and solidification, forming a protective layer, hindering the further destruction of the virus nucleic acid by alcohol, which is not conducive to the overall inactivation of the virus.

Alcohol is a flammable and volatile hazardous chemicals, the fire risk belongs to Class A, its flash point is about 9 ℃, the lower explosive limit is 3%(V/V). If it is sprayed into the air, alcohol vapor and air mixed with a concentration of 3% or more, once it encounters high-temperature objects, static electricity on clothes, electric sparks or lit cigarettes, it is prone to deflagration and danger. The alcohol spray method does not form droplets suspended in the air with a particle size of less than 50 microns, and it is difficult to kill the virus in the air. So the use of alcohol spray on air disinfection is not scientific. If it is sprayed on the surface of the object or the person's body, the alcohol vapor will be inhaled through the breath and absorbed through the skin, which will lead to the risk of poisoning and allergy.

For the sake of safety, do not use alcohol spray disinfection indoors and outdoors. It is recommended to wipe the items directly with alcohol with a concentration of about 75% to moisten the surface and evaporate and dry naturally, which can achieve the effect of inactivating the virus. Moreover, in the process of disinfection to avoid alcohol leakage, keep indoor ventilation, the concentration of alcohol in the air does not exceed 3%, in order to prevent fire. Alcohol can also be used to soak small objects, disinfection must be prohibited nearby fire, to prevent the risk of burning. Finally, remember to place alcohol properly to avoid being eaten by children and causing alcoholism.

Friendly tips:

What if alcohol catches fire?

1. Dry powder fire extinguishers and carbon dioxide fire extinguishers can be used to extinguish the fire. 2, a small area of fire can also be covered with wet towels, wet clothes to extinguish the fire. 3, outdoor can also use sand cover. 4, do not put out the fire in the direction of people or flammable materials. 5. It is strictly forbidden to use water splashing or dry towels and clothes to beat, otherwise if it is ignited by alcohol, the fire will spread and spread, and the more it burns, the bigger it will be.

Alcohol fire injury, how to save themselves?

1. Take off your clothes immediately. Clothes stained with alcohol, has become a burning matter, with the fastest speed to remove clothing, from the heat source, can minimize the damage and consequences. 2. Avoid shouting. In cases where the head and face are already surrounded by flames, shouting can cause severe respiratory tract burns. The respiratory tract burn is one of the three major causes of death in burn patients. 3. Try to put out the fire should be covered with cotton fabric or washed with water nearby. Seek medical attention immediately after the fire is out.

Special Note: Chemical commodities generally have a safety technical specification (SDS/MSDS), which provides chemical physical and chemical parameters, combustion and explosion performance, health hazards, safe use and storage, leakage disposal, first aid measures and relevant laws and regulations. It is generally displayed on the outer packaging of the product. Everyone must pay attention to this information when contacting chemicals, and protect themselves and the people around them at critical moments.

Xinanrun (Beijing) Consulting Co., Ltd. was established in 2009, focusing on chemical regulations and compliance consulting services. With its profound professional technical strength and multi-resource advantages, it is committed to serving pharmaceutical, chemical companies, consumer goods manufacturers, and large multinational companies. The company provides chemical regulations consulting and environmental protection regulations response services. At present, our consulting services on chemical regulations include

Declaration of new domestic chemical substances

Registration of hazardous chemicals

SDS/GHS Labeling

South Korea K-REACH Registration

Pharmaceutical, cosmetics regulatory consultation

Environmental regulations consulting services including park environmental protection housekeeper

Design of comprehensive solutions for solid waste and hazardous waste, etc.

If you have chemical registration, environmental compliance issues, please contact us!

Contact: Miss Ann

Mobile phone number: 15801695345

Micro signal: NARconsulting

Electronic E-mail: nar@china-reach.net