Probably a Stupid Question about Canesten (and Alternatives) for Anti-Fungal Rinse

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  pegaxs on 08/05/2021 - 09:43

  1.5% w/w means 1.5g dissolved into 100g of solution.

  Assuming the solution is a mixture of the active chemical and just water (at a density of 1.0) you would have 1.5g of active chemical per 100g of solution. Factor that up to the litre quantity by multiplying it by 10 and it’s 15g/litre.

  Maybe we have an industrial chemist who can confirm this? Been a while since I did any chemistry.

  • 

    roberttimmms on 08/05/2021 - 09:53

    Ah if that's the case and the "cheap" disinfectant is actually 15g/L, that means less than 1/4 as concentrated as the Canesten at around 1/3 the price, so it doesn't really work out to be worth it. Thought I was being smart haha guess not

    • 

      Kangal on 08/05/2021 - 10:33

      +1

      If its on hard surfaces, regular old bleach works just as well.
      Just note most of these fungicides are simply glorified bleach, and they will kill almost all moulds but not the spores. It's very difficult to kill spores. I've heard that "Clove Oil" is one of the things that does kill spores.

      • 

        resubaehtgnolhcs on 08/05/2021 - 10:52

        +1

        If it bleeds, we can kill it…

      • 

        nfr on 08/05/2021 - 12:14

        Don't kill the spores. Elon Musk will need them to make the spore drive.

  • 

    Duckie2hh on 08/05/2021 - 13:13

    As someone who know these products well, all I can say is that industrial grade Benzalkonium CHloride contain more impurities and therefore may not be suitable for personal care use, compared to that used on products where contact with skin can occur.

    70g/L equates to 7%w/v, compared to the disinfectant at 1.5%w/w. Bear in mind, the former product is designed for use where rinse off will occur.

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  mapax on 08/05/2021 - 11:25

  +2

  https://www.woolworths.com.au/shop/productdetails/879665/cle…

  This has the same active ingredient and same quantity as the canesten but half the price

  • 

    roberttimmms on 08/05/2021 - 12:06

    Oh wow this is actually perfect, haven't seen this one before. Thanks

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  BOGOF on 08/05/2021 - 11:37

  This is effectively the same active ingredient and has 100g per litre.
  https://www.bunnings.com.au/glitz-5l-spray-and-go-concentrat…

  I use this for cleaning hard surfaces such as concrete, bricks etc., and to get rid of algae in the pool, and to kill moss on my garden, and to disinfect fabric.