Safety first, prevention before it happens: Do you understand these disinfection precautions?

Recently, whether working from home or returning from an outing, everyone will choose to "spray" with disinfectants. However, alcohol disinfection and wormwood disinfection, which are common disinfection methods, are prone to various accidents if they are not used properly. Safety science popularization on the correct use of alcohol disinfection, these matters must be paid attention to! Below, we will provide you with a package on the safe use of alcohol, welcome to share!

1. Alcohol disinfection

1. Basic characteristics of alcohol

Alcohol is a flammable and volatile liquid. Its flash point is 12.8℃. Because 75% alcohol contains water, its flash point is about 22℃, close to room temperature. The explosion concentration limit of alcohol is 3.3-19 (V%). The lower limit of alcohol's explosion concentration of 3.3 (V%) is lower than the lower limit of hydrogen's explosion concentration of 4.0 (V%). Therefore, you should be careful when using 75% alcohol to wipe objects, avoid fire sources igniting alcohol, and don't spray alcohol directly into the room.

(II) Precautions for using alcohol

Disinfection range:

1. Alcohol is more suitable for small-scale disinfection. 75% alcohol, especially spray-type alcohol, should be used in a small area and at close range on the surfaces of items that need to be disinfected, such as door handles, keys, door mats, and small express parcel surfaces.

2. Note that alcohol spray is not suitable for disinfecting larger surfaces such as tables, floors, outerwear, etc. For disinfection of large areas of objects or places, chlorine-containing disinfectants that are soluble in water and can produce sodium hypochlorite, such as 84 disinfectant, bleaching powder, chlorine-containing effervescent tablets, etc. should be used.

3. When disinfecting electronic products such as computer keyboards, mobile phone screens, and small items such as glasses and watches, it is recommended to use alcohol cotton pads, or spray alcohol spray on disposable cotton pads, and then wipe the keyboard and screen with a wet cotton pad (be careful not to spray too much, pinch the cotton pad after spraying to squeeze out excess alcohol).

Fire and explosion protection:

When using alcohol, do not spray it in places with open flames or high temperatures. In addition to not being able to directly contact fire sources, you must also prevent combustion and explosion caused by alcohol vapor. When spraying disinfectants, alcohol is highly volatile and easily produces alcohol vapor, especially in confined spaces, such as rooms with closed doors and windows. This may cause alcohol vapor to accumulate and reach the explosion range, causing combustion or even explosion when encountering a fire source.

Focus on the following three points:

1. When using alcohol, avoid fire sources and electrical equipment such as electric mosquito swatters and electric heaters. Do not smoke when using alcohol.

2. Avoid using large amounts of alcohol in a confined, small space to prevent the formation of high-concentration alcohol vapor and causing fire or explosion. It is recommended to purchase and use small bottles of alcohol spray and cover the lid after each use.

3. When it is inconvenient to wash your hands with water outdoors, you can occasionally use alcohol spray as a hand sanitizer, but it is not recommended to use it for a long time, because alcohol evaporates and takes away moisture from the skin, causing dryness, cracking, peeling, etc., which is very irritating to the skin. In addition, alcohol cotton pads can also be used as emergency products to keep your hands clean.

(III) Precautions for storing alcohol
1. When your home really needs alcohol disinfection, you can buy small bottles of alcohol, no more than 500 ml (about the amount of 1 bottle of mineral water). This is enough. Do not hoard alcohol in large quantities, otherwise your family will be in danger.

2. Containers for storing alcohol must be reliably sealed, and it is strictly forbidden to use uncovered containers.

3. When storing alcohol, keep it away from fire and heat sources, the temperature should not exceed 30°C, and avoid direct sunlight.

If you encounter an alcohol fire at home, you can take the following emergency measures:

1. You can use dry powder fire extinguishers, carbon dioxide fire extinguishers, etc. to extinguish the fire.

2. Small fires can also be extinguished by covering them with wet towels or wet clothes.

3. Sand can also be used for outdoor covering.

4. It is strictly forbidden to use water or dry towels or clothes to extinguish the fire, otherwise if the fire is ignited by alcohol, the fire will spread and become bigger and bigger.

2. Fumigation and disinfection

1. Precautions for disinfection of mugwort

1. When burning moxa indoors, be sure to stay away from flammable and combustible items.

2. There must be someone on duty during smoking.

3. It is best to use the "suffocation" method for the used moxa sticks, sealing them from the air and completely eliminating the possibility of fire caused by the rekindling of the moxa sticks.

4. Mugwort leaves hung on door frames and outside windows are flammable after drying and should be handled in a timely manner and should not be taken lightly.

5. If a fire occurs, do not panic and call 119 immediately.