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BAC 50 | Benzalkonium Chloride



Benzalkonium chloride (BAC 50)  is a quaternary ammonium-based biocide with an optimised alkyl chain length distribution. It can be used for the preparation of disinfectants, cleaners and timber preservation formulations, production of fungicidal/algicidal washers 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
  • Fungicidal: kill fungus, algae and mould
  • 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 depending.

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. 


    The usual delivery time scale is 2-3 working days however, this may vary depending on your postcode and our courier's service levels. 

    Need more information?  

    At Liquipak, we are always happy to help! 
    If you need additional information about the product, or if you haven't found what you were looking for, contact us and we will help you with any queries!

    Please contact us at or call us at 01484 44 22 33.

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