What is the most suitable concentration for alcohol disinfection?

In real life, alcohol is not unfamiliar to many people, and alcohol has a certain disinfecting effect. Medical alcohol can treat physical diseases and disinfect wounds. The most suitable concentration for alcohol disinfection is between 70% and 75%. Alcohol can quickly enter the bacteria and can fight against inflammation and sterilization. It is very good for human wounds.

What is the most suitable concentration for alcohol disinfection?

1. Alcohol with a concentration of 75% has the strongest bactericidal power, so medical disinfectant alcohol generally contains 75% pure alcohol and 25% water.

Alcohol molecules have great penetrating power. They can pass through the membrane on the surface of bacteria, penetrate into the interior of the bacteria, coagulate the protein that constitutes the basis of bacterial life, and kill the bacteria.

2. When some bacteria encounter high concentrations of alcohol, they will quickly produce a protective reaction and form spores with a hard shell to resist the damage of alcohol. When the time is right, the cells inside the film will revive. Therefore, the use of concentrated alcohol cannot achieve the purpose of disinfection and sterilization.

3. After adding a certain amount of water to pure alcohol, alcohol will not cause the protein on the surface of bacteria to coagulate all at once. As a result, a large number of alcohol molecules penetrate into the bacteria, causing the protein inside to coagulate, and the bacteria will inevitably die.

4. Use 70% - 75% alcohol, which can coagulate the protein that makes up the bacteria but prevent it from forming a film, allowing the alcohol to continue to penetrate into the interior and thoroughly disinfect and sterilize it.

5. Even if the concentration of alcohol is lower than 70%, it cannot completely kill bacteria.

6. 75% alcohol is commonly used for disinfection in hospitals.

Some people think that the higher the alcohol concentration, the better the disinfection effect, which is wrong. The function of alcohol disinfection is to coagulate the protein in bacteria, thereby killing the bacteria. However, 95% alcohol can quickly coagulate the protein on the surface of bacteria and form a protective film, which prevents alcohol from entering the bacteria and therefore cannot kill the bacteria completely.

If the alcohol concentration is lower than 70%, although it can enter the bacteria, it cannot coagulate the protein in the body, nor can it completely kill the bacteria. Only 70%-75% alcohol can smoothly enter the bacteria and effectively coagulate the protein in the bacteria, thus killing the bacteria completely.

Precautions for alcohol disinfection

Alcohol must be purchased from a medical institution and industrial alcohol must not be used by mistake

Alcohol is a flammable and dangerous substance. When storing it, please keep it away from light and heat and seal it in a cool place to avoid reducing the concentration after evaporation.

Also, please stay away from fire sources and electrical appliances to avoid fire.

When alcohol burns, extinguish the fire by isolating the air