Industrial alcohol cannot be used for sterilization. Industrial alcohol refers to industrial alcohol, which is usually extracted from raw coal or petroleum, contains impurities such as methanol, formaldehyde, and is not easy to separate, and usually the ethanol content is greater than or equal to 95%.
The reason industrial alcohol can not be used for disinfection is because the first alcohol as a common disinfectant, refers to the concentration of 75% alcohol, the concentration is too low or too high, the disinfection effect is unreliable, industrial alcohol concentration is unreliable more than 95%, and therefore is not used for disinfection; the second level of industrial alcohol contains methanol and other substances, such as the human body, has a strong toxicity, if the breath or the skin ingestion amount will be Cause toxicity, so whether it is used for surface disinfection or skin disinfection, not only does not work to disinfect, or even harm human health, resulting in serious consequences.
Methanol contained in industrial alcohol has a great impact on the human nervous system and blood system, serious people will lead to blindness or even death. Therefore, industrial alcohol can only be used as a raw material or as a fuel in the non-food industry and cannot be used for sterilization. When using or storing alcohol, flammable and explosive substances should be paid and contact with fire should be avoided and kept away from fire.
The new crown epidemic, medical alcohol (ethanol) is soaring and some seamless elements are being infiltrated into the people in order to sell industrial alcohol (with methanol) to the people and to cheat the consumers.
Differences between Industrial Alcohol and Medical Alcohol
1, Purity
Medical Alcohol refers to a variety of medicinal, medical alcohols, and is commonly available in 95% and 75%.
Industrial alcohol refers to industrial alcohol, and industrial alcohol is usually 95% and 99%.
2, Toxicity
Because of fewer impurities and low concentration, medical alcohol can be used to sterilize people.
Industrial alcohol contains methanol (high toxicity), can not be used for human disinfection, and it is also partially absorbed by the skin disinfection. Poisoning can lead to blindness or death.
3, use
Medical alcohol is mainly used for disinfection and sterilization.
Industrial alcohol can be used for cleaning agents, solvents.
The role of different concentrations of medical alcohol
95% alcohol is usually used in hospitals to wipe down medical equipment, while at home it can only be used to clean camera lenses. If you want to transfer 95 percent alcohol to 75 percent alcohol, you need to add 0.26 times more water.
75 percent alcohol is used for sterilization.
25 to 50 percent alcohol can be used for physical exsanguination. They can be used for cooling purposes in patients with high fevers.
The easiest way to identify them is the "copper wire test"
1. Find a copper wire, preferably relatively similar to a toothpick (our usual wires are copper);
2. Mix a small portion of wine in a container;
3. Burn the wire over a fire until it is black (i.e., convert the copper to copper oxide);
3. copper oxide);4. Throw the burning copper wire into a container containing alcohol;
Conclusion: If the black material on the surface of the copper wire peels off quickly, restores the red color of the original copper wire, and there are no bubbles, then this is not industrial alcohol, and there is no methanol. If the black material on the surface of the copper wire will not peel off and it will bubble, it is industrial alcohol; because of the chemical reaction, the alcohol containing methanol will produce gas (formaldehyde).