Ingesting or inhaling rubbing alcohol can quickly lead to alcohol poisoning—even death. There are three types of alcohol classified by chemists: isopropyl, methyl and ethyl alcohol. Most types of rubbing alcohol are made from isopropyl alcohol, with concentrations of 68-99 percent alcohol in water.
Both alcohols, ethyl and isopropyl, can kill several bacteria in 10 seconds or fewer in the lab, including Staph aureus, Strep pyogenes, E. coli, Salmonella typhosa, and Pseudomonas species, some of the bad actors in infections. For M. tuberculosis, it may take as long as five minutes of contact.
Rubbing alcohol is a natural bactericidal treatment. This means it kills bacteria, but doesn't necessarily prevent their growth. Rubbing alcohol can also kill fungus and viruses. Otherwise, the solution may not effectively kill bacteria.
Isopropyl alcohol is readily absorbed through the skin, so spilling large amounts of IPA on the skin may cause accidental poisoning. Small amounts of IPA on the skin is generally not dangerous, but repeated skin exposure can cause itching, redness, rash, drying, and cracking.
Ingesting only eight ounces of rubbing alcohol can kill you. If a person drinks even a small amount and has any of the above-mentioned side effects, call 911—medical attention is necessary immediately. Do not induce vomiting. If rubbing alcohol was inhaled, move to fresh air.
Colorless and bitter-tasting, isopropyl alcohol, also referred to as isopropanol and IPA, is twice as toxic as ethanol. Swallowing just 8 ounces, or 240 milliliters, of rubbing alcohol can be fatal — but as little as 20 milliliters mixed with water can make a person sick.
Hand sanitizer recipe
- 3/4 cup of isopropyl or rubbing alcohol (99 percent)
- 1/4 cup of aloe vera gel (to help keep your hands smooth and to counteract the harshness of alcohol)
- 10 drops of essential oil, such as lavender oil, or you can use lemon juice instead.
90% alcohol rubs are more effective against viruses than most other forms of hand washing. Isopropyl alcohol will kill 99.99 % or more of all non-spore forming bacteria in less than 30 seconds, both in the laboratory and on human skin.
Isopropyl alcohol, particularly in solutions between 60% and 90% alcohol with 10 – 40% purified water, is rapidly antimicrobial against bacteria, fungi, and viruses. Isopropyl alcohol concentrations over 91% coagulate proteins instantly.
Ethyl Alcohol is also a slightly better virucide than IPA. A 70% solution of Ethyl Alcohol 95% kills organisms by denaturing their proteins and dissolving their lipids and is effective against most bacteria, fungi and many viruses, but is ineffective against bacterial spores.
Why Is 70% the Most Effective Concentration of Isopropyl Alcohol for Disinfection? Isopropyl alcohol, particularly in solutions between 60% and 90% alcohol with 10 – 40% purified water, is rapidly antimicrobial against bacteria, fungi, and viruses.
Ethanol may be used in purely surface-cleaning applications, but isopropyl alcohol can also double as antiseptic and is often used in hospitals. Both are most effective at 70 percent concentration and can be used to clean small tools if they are immersed for about 10 minutes.
Denatured alcohol (ethanol) disinfectant is typically considered to be more effective as a virucidal disinfectant because isopropyl alcohol is not as effective against non-enveloped viruses. Ethanol, which is the main ingredient in denatured alcohol can rapidly inactivate vegetative bacteria.
Isopropyl Alcohol 99% is pure isopropanol and Isopropyl Alcohol 70% is pure isopropanol diluted with 30% purified water by volume. A 70% isopropyl alcohol solution dissolves their lipids and is effective against most bacteria and fungi and many viruses, but is ineffective against bacterial spores.
Equate 50% Isopropyl Alcohol Antiseptic, 16 fl oz is a must have first aid antiseptic for every medicine cabinet. Perfect for cleaning and protecting cuts and abrasions while being a very effective antibacterial cleansing agent, it helps prevent the risk of infection in minor scrapes and burns.
Isopropyl alcohol, particularly in solutions between 60% and 90% alcohol with 10 – 40% purified water, is rapidly antimicrobial against bacteria, fungi, and viruses. Extra water content slows evaporation, therefore increasing surface contact time and enhancing effectiveness.
The optimum concentration for disinfection purposes is between 60%-90% solution in water v/v. Typically 70% solutions are used. Higher concentrations of alcohol are in fact less effective at killing bacteria. With its lower water content, it is more suited as a rubbing alcohol and for electronic component cleaning.
Isopropyl alcohol is an effective disinfectant against many pathogens, including coronavirus, as long as the concentration is 70%. Most rubbing alcohols are 70% isopropyl alcohol, but concentrations can range from 60-99%.
Most OTC rubbing alcohol has 70 percent isopropyl, the rest is made up of water or oils. Inherently, rubbing alcohol can fight bacteria and other harmful microbes. When the alcohol comes into contact with your skin, it disinfects it by breaking down bacteria. This includes all types — not just the harmful ones.
Isopropyl alcohol, particularly in solutions between 60% and 90% alcohol with 10 – 40% purified water, is rapidly antimicrobial against bacteria, fungi, and viruses. Once alcohol concentrations drop below 50%, usefulness for disinfection drops sharply.
Isopropyl alcohol manufacture (strong-acid process) is carcinogenic to humans (Group 1). Isopropyl alcohol is not classifiable as to its carcinogenicity to humans (Group 3). Isopropyl oils are not classifiable as to its carcinogenicity to humans (Group 3).
