Why 70% alcohol is most effective as disinfectant?

-70 % alcohol is most effective as disinfectant. Alcohol destroys the cell wall of the micro organism. It denature the protein of cell membrane.

-The presence of the water also play important role. water act as catalyst during this action.

- In this action surface contact time is main factor. In 70 percentage of alcohol penetrate completely into the bacteria. and coagulates the protein.

-70 percentage of alcohol provide the sufficient contact time with bacteria so complete penetration is possible.

-If solution used more than the 90 % than it may kill the bacteria but not completely. They are in dormant condition.

SO 70% alcohol is most effective as disinfectant as most effective.