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BAC 50 | Benzalkonium Chloride 500ml - 20 Litres



Benzalkonium chloride (BAC 50)  is a quaternary ammonium-based product. It can be used for the preparation of disinfectants, cleaners and timber preservation formulations and other similar applications. 

Benzalkonium chloride is readily soluble in ethanol, IPA and acetone. Although dissolution in water is slow, aqueous solutions are easier to handle and are preferred. Solutions should be neutral to slightly alkaline, with colours ranging from colourless to pale yellow. Solutions foam profusely when shaken.

100% UK manufactured product. 

 Specification and Material Safety Data Sheet are available upon request.


  • Disinfectant
  • Used as a preservative in cosmetics
  • Used in formulations of mils cleaners
  • Phase transfer agent
  • Microbe corrosion inhibition in the oil industry 

Directions of use 

The advised dilution ratio is 1:8 (one-part Bac 50 and eight parts of water). It can be as high as 1:40 application dependant.

Spray and leave formula:

Apply the solution to the affected area and leave it to work. If needed, the advised dilution ratio can be increased.

The product must be used on dry surfaces with no rain forecast for at least 8 hours. 

    Need more than 200 Litres? ↓ 

    If you need more than 200 litres of BAC50, please contact us at or call us at 01484 44 22 33.

    FAQ Questions


    Customer Reviews

    Based on 7 reviews
    robert short
    BAC 50

    The product is exactly what we wanted and the delivery was to the minute.
    Will definitely purchase from Liquipak again.

    David Rigg
    QUICK-SMART Review

    All good. Thanks.
    Received the following day!!
    Excellent product, packaged well and the product worked really well.

    Richard Main

    Never used another company since buying from here, all my cutomers are happy being moss free fro years

    Malcolm Colegate
    Looking forward to using Benzalkonium

    Have used a retail pack which was ok but I’m looking forward to using this Benzalkonium Chloride Concentrated 500ml in the late Sumer/Autumn and getting the concentration right for a good result. I think it will be a twice a year application for good control. Also planing to use it on the roof to reduce the moss.

    Richard Main
    Good deal

    Been on many sites and this seems to be one of the cheapest around