Isopropyl alcohol 70 percent, or isopropyl alcohol 99 percent diluted to 70 percent with purified water, kills organisms by denaturing their proteins. A 70 percent isopropyl alcohol solution dissolves their lipids and is effective against most bacteria and fungi and many viruses."70% isopropyl alcohol is most commonly used disinfectant in pharmaceutical industries. 

70% isopropyl alcohol 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 

2/3 cup rubbing alcohol of at least 70% alcohol concentration. *When using rubbing alcohol with higher alcohol concentrations, add water to the mix.

70% IPA 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.

ISO-PROPYL ALCOHOL DISINFECTANT IPA 70%