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  #1  
Old 04-04-2020, 11:31 PM
Clawhammer Clawhammer is offline
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Physan-20 Kill Coronavirus?
Default Physan-20 Kill Coronavirus?

Just wondering if anyone knows?
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  #2  
Old 04-05-2020, 12:20 AM
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Quote:
Originally Posted by Clawhammer View Post
Just wondering if anyone knows?
I would be very careful, if you use it on you hands, for in my brief review of it, it is very toxic. I would think to use, with gloves, and with proper dilution, it is possible a viricide against Covid10.


per amazon
Physan 20 is a odorless, and colorless liquid. It is a powerful cleaner and disinfectant when used properly. The manufacturer recommends you only use 1ml for every 10 gallons, and THEY ARE SERIOUS! Using too much Physan 20 can be toxic and deadly for any plants or fishes living in your pond, aquarium or reservoir.

---------- Post added at 09:20 PM ---------- Previous post was at 09:07 PM ----------

One of the assisted living homes with 55 residents, that I am helping with supplies, will be out of hand sanitizer.
I only have part of a bottle left to use in my car, so I am trying to make my own or figure out something that is safe. There is no glycerin or aloe vera in my town. I am slow to be reading about using that with alcohol. Vodka is 40% compared to 70% isopropol that is the only alcohol known to kill the virus per research. I do not have any left so I mixed some vodka with some mouthwash that is chlorohexidine, but only a tiny percentage, I am going to use it in my car to wipe down steering wheel and gear shift if I have to leave my home.c
but that gave me another idea for the assisted living and remember Hepa Cleanse, stronger than the mouthwash, used by drs to scrub with water prior to surgery/delivering babies. So I got the only bottle they had at walgreens, and had them order several bottles for the assisted living center if they choose.
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Old 04-05-2020, 07:59 AM
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I'm certainly not suggesting you simply run out, buy and use it, but a 1.5% solution of glutaraldehyde is available at most pet stores labeled "Flourish Excel". Glutaraldehyde is used for cold sterilization of surgical instruments, and surfaces in laboratory environments. I would strongly suggest you look into the compound yourself before using it, and of course it's suitable for external use only!
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Old 04-05-2020, 10:00 AM
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I would guess the answer is “yes”.

Physan 20 is of the same class of quaternary ammonium compounds as hospital disinfectants. It consists of alkyl dimethyl benzyl chlorides and alkyl dimethyl ethyl benzyl chlorides.

Some disinfecting wipes we picked up at the grocery store contain those and octyl- versions, but totaling only 0.31%. A tablespoon-per-gallon is 0.39%.

I use a single liquid product for shampoo, body wash and shaving lubricant in the shower. Back when I was on the road 5-6 days a week and spent a lot of time in the hot end of glass plants (ambient temperature about 115-120F), I would “spike” the soap product with a half teaspoon Physan per bottle to make it more strongly antibacterial. Did that for several years and never had a problem.
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Old 04-05-2020, 10:10 AM
Clawhammer Clawhammer is offline
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Quote:
Originally Posted by Ray View Post
I would guess the answer is “yes”.

Physan 20 is of the same class of quaternary ammonium compounds as hospital disinfectants. It consists of alkyl dimethyl benzyl chlorides and alkyl dimethyl ethyl benzyl chlorides.

Some disinfecting wipes we picked up at the grocery store contain those and octyl- versions, but totaling only 0.31%. A tablespoon-per-gallon is 0.39%.

I use a single liquid product for shampoo, body wash and shaving lubricant in the shower. Back when I was on the road 5-6 days a week and spent a lot of time in the hot end of glass plants (ambient temperature about 115-120F), I would “spike” the soap product with a half teaspoon Physan per bottle to make it more strongly antibacterial. Did that for several years and never had a problem.
Thanks Ray, I found several other quaternary cleaners on the official list from the CDC. I like the clean smell of physan-20 over lysol. All my hand sanitizer and idinfectant wipes are like 5 years old so not sure how effective they are. Going to make up a spray bottle of physan.

1tbsp a gallon still recommended?

---------- Post added at 06:10 AM ---------- Previous post was at 06:08 AM ----------

Quote:
Originally Posted by Subrosa View Post
I'm certainly not suggesting you simply run out, buy and use it, but a 1.5% solution of glutaraldehyde is available at most pet stores labeled "Flourish Excel". Glutaraldehyde is used for cold sterilization of surgical instruments, and surfaces in laboratory environments. I would strongly suggest you look into the compound yourself before using it, and of course it's suitable for external use only!
Coincidentally I have two bottles of this from my planted fish tank days!
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Old 04-05-2020, 05:59 PM
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1tbsp a gallon still recommended?
That’s what I would do.
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Old 04-29-2020, 12:49 AM
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Alright, so there is a BIG "danger" warning on the Physan bottle. On the back, it says to not get it on your skin:

Quote:
Corrosive. Causes irreversible eye damage and skin burns. Do not get in eyes, on skin, or on clothing. Wear goggles or face shield and rubber gloves when handling. May be harmful il swallowed or absorbed through the skin. Wash thoroughly with soap and water after handling and before eating, drinking or using tobacco. Remove contaminated clothing and wash before reuse
Please do not use this to decontaminate surfaces that you plan on touching soon after
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Old 04-29-2020, 01:05 AM
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Quaternary ammonium salts can cause some people to have allergic reactions or cryptic irritant effects. I'd stick to using preparations that are intended for home use and are diluted accordingly. Just because Ray put it in his shampoo (LOL) does not mean it's safe.
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Old 04-29-2020, 01:21 AM
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Quote:
Originally Posted by thefish1337 View Post
Quaternary ammonium salts can cause some people to have allergic reactions or cryptic irritant effects. I'd stick to using preparations that are intended for home use and are diluted accordingly. Just because Ray put it in his shampoo (LOL) does not mean it's safe.
AND if you're trying to kill the coronavirus, regular soap and water will do the trick -- it's better than anything else for your hands.

If you want to disinfect surfaces, you could do:
  • 78% ethanol for 30s
  • 70% 2-Propanol for 30s
  • 0.21% Bleach for 30s
  • 0.5% Hydrogen Peroxide for 1 min

https://www.journalofhospitalinfecti...046-3/fulltext
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Old 04-29-2020, 09:01 AM
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Quote:
Originally Posted by hypostatic View Post
Alright, so there is a BIG "danger" warning on the Physan bottle. On the back, it says to not get it on your skin:

Please do not use this to decontaminate surfaces that you plan on touching soon after
That primarily applies to the concentrate. A 1 teaspoon-per-gallon dilution isn’t an issue. Certainly, I’d avoid eye contact in any case.

I read a recent article that talked about the use of NIH approved greenhouse disinfectants to avoid shipping contaminated plants if a nursery worker has COVID-19, and Physan was not on the list.

Sorry, I no longer have the article or reference.
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