Isopropyl Alcohol 70% Wintergreen with Glycerin, 16oz
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.
The presence of water is a crucial factor in destroying or inhibiting the growth of pathogenic microorganisms with isopropyl alcohol. Water acts as a catalyst and plays a key role in denaturing the proteins of vegetative cell membranes.
70% Isopropyl Alcohol solutions penetrate the cell wall more completely which permeates the entire cell, coagulates all proteins, and therefore the microorganism dies. Extra water content slows evaporation, therefore increasing surface contact time and enhancing effectiveness.
Isopropyl alcohol concentrations over 91% coagulate proteins instantly.
Solutions > 91% of Isopropyl Alcohol does kill bacteria, but sometimes requires longer contact times for disinfection, and enables spores to lie in a dormant state without being killed.
The important thing is that only 70% solution of isopropyl alcohol acts as a disinfectant killing all surface microorganisms. It is used to disinfect hands and equipment surfaces in pharmaceuticals.
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