Your Healthcare Connection
< Back
Font Sizes
-
+
Reset

Is 70% Isopropyl Alcohol better at killing bacteria and viruses than 90% isopropyl alcohol?

The United States Centers for Disease Control and Prevention (CDC) did a research on disinfecting and sanitizing methods and published the Guideline for Disinfection and Sterilization in Healthcare Facilities.

 

70% isopropyl alcohol can cross over the cell membrane more effectively, thereby attacking the entire cell and killing the bacteria (CDC, 2020).

 

Benefits of 70% isopropyl alcohol: –

  • Coagulation of surface proteins proceeds at a slower rate, thereby allowing the alcohol to enter the cell.

 

  • 70% alcohol, being a dilution of absolute alcohol, contains water which is essential in the denaturing process of proteins.

 

  • Due to the concentration difference of water and alcohol on either side of the cell wall, 70% alcohol enters the cell to denature both enzymatic and structural proteins. This increases the potency of its antimicrobial properties.

 

The CDC recommends 70% for disinfecting one’s household and routine cleaning (CDC, 2020).

 

https://www.cdc.gov/infectioncontrol/pdf/guidelines/disinfection-guidelines-H.pdf

General Enquiry Form

  • We would like to thank you for your support through the years. We value your comments and feedback. Kindly fill in the general enquiry form for any product and services related matters. Or you can use the customer feedback form to tell us about our services and how we can serve you better.
  • This field is for validation purposes and should be left unchanged.
Is 70% Isopropyl Alcohol better at killing bacteria and viruses than 90% isopropyl alcohol?