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Do you know " How does Sanitizer kill a Virus? "


  • In the present time the condition of our country, even the whole world is very critical.
  • We are fighting against the pandemic disease, this is so contagious.
  • And still the vaccination is not available.
  • So many scientists ,researchers and medical experts team are racing against time to find cure for pandemic COVID-19.
  • But before any vaccination first of all we need to maintain our personal hygiene like:-
  • Since it's a contagious disease, so it's spread from person to person, so maintain social distancing, avoid to go in crowded areas.
  • Wash your hands with soap and water for at least 20 sec. after you have been in a public place.
  • Cover your face after coughing or sneezing or use mask and wash your hands after done, with soap and water.
  • If water and soap is unavailable than use Sanitizer containing at least 60% alcohol.


What is Sanitizer?


  • Hand sanitizer, also called hand antiseptic, hand rub or handrub agents applied to the hand for the purpose of removing common pathogens.
  • Thus soap and water is the best way to keep your hands virus free , but when you are not near to sink the sanitizer are next best thing.
  • Centers for Disease Control and Prevention (CDC) recommends that people use a sanitizer containing 60% alcohol.

Why alcohol is main ingredient in sanitizer?

  • Because alcohol is a very effective disinfectant that is also safe to put on your skin.
  • Alcohol's jobs to break up the outer coating of bacteria and viruses.

How Sanitizer is effective to kill the Bacteria and Viruses?

  • Viruses protect themselves with only a cover or you can say cage of protein.
  • Alcohol have long been known to kill germs by denaturating the protective outer proteins of microbs and dissolving their membrane.

Why at least 60% alcohol containing sanitizer?

  • CDC recommends using a hand sanitizer with at least 60% alcohol, because lower concentration of alcohol aren't as effective at killing viruses.
  • Even up 90% alcohol is preferable to ensure that hand sanitizer completely kills germs, rather than reducing their growth on hand.

Why Soap  and Water are more effective than Hand Sanitizer?

  • Because soap and water removing certain kind of germs like norovirus, cryptosporidium, clostridium defficile.
  • Although alcohol based hand sanitizer can inactivate many types of microbs.
  • When hands are heavily soiled or greasy, hand sanitizer may not work well.
  • Hand sanitizer can't remove harmful chemicals.

Types of Sanitizer

Alcohol based :-

  • Typically contain 60-95% alcohol.
  • Usually in the form of Ethanol, isopropanol or n- propanol.
  • At that concentration alcohol immediately denatures proteins and neutralising certain types of bacterias.

Alcohol free:-

  • Generally based on disinfectants, such as benzalkonium chloride (BAC), or on antimicrobial agents, such as triclosan.
  • The activity of disinfectants and antimicrobial agents is both immediate and persistent.
  • Many hand sanitizer also contain glycerine ineffective against bacterial spores, non enveloped viruses (e.g. norovirus) and encrysted parasites (e.g. Giardia).

Drawback of Sanitizer

  • Alcohol based sanitizer, the risk of fire.
  • Poisoning from accidental.
  • Intentional ingestion of alcohol based sanitizer.


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