From the point of view of chemistry, any substance that has hydroxyl (-OH) in its chemical formula 

From the point of view of chemistry, any substance that has hydroxyl (-OH) in its chemical formula is considered an alcohol. Alcohol is a derivative of hydrocarbons in which each molecule is a combination of several hydrogen and carbon atoms. be Finally, an agent (OH) replaces a hydrogen atom. And according to the number of the agent (OH), alcohols are called monovalent or polyvalent.
The alcohol that is used in the industry, in terms of its nature, has no difference with medical alcohol and both are the same ethyl alcohol or ethanol. However, for reasons such as avoiding their misuse, factories producing industrial alcohol add toxic substances, odorants (such as methanol or wood sweat) and coloring substances (such as pyridin) to it.
In fact, there is some methanol in industrial alcohol, while there is only pure ethanol in medical alcohol.