Benzalkonium Chloride – Alkyl Dimethyl Benzyl Ammonium Chloride – BAC 50


Description: Quaternary ammonium compounds, benzyl (C12-C16) alkyl dimethyl, chlorides
CAS number: 68424-85-1
EC number: 270-325-2

Test parameter Unit Specification
Appearance White to pale straw clear liquid
pH value 6.0 – 9.0
Cationic Activity % 49.0 – 51.0
Amine value mg KOH/g Max. 1.0
Specific Gravity at 20°C 0.96 – 1.0


  • As a broad spectrum disinfectant
  • Microbe corrosion inhibition in the oil industry
  • It is used as a preservative in cosmetics.
  • Used in formulations of mild cleaners.
  • Used in fungicidal products to kill fungus, mould and algae.
  • Used as phase transfer agent.

PLEASE NOTE: It is the responsibility of the user to obtain registration for formulations based on BAC 50 appropriate to its recommended application and the country or territory in which it will be used.

BAC50 is no longer permitted for the use as, or in preparations for the treatment of moss as moss has been reclassified as a plant and comes under the plant protection legislation.

BAC50 is a strongly cationic product and therefore incompatible with formulations containing anionic components. It may, however, be used with other cationic or non-ionic compounds. Users are therefore strongly advised to carry out their compatibility tests prior to initial application.

Biocidal Properties

BAC 50 possesses a wide spectrum of antimicrobial efficacy including activity against the following organisms:

Test Micro-organisms:

Bacillus subtilis
Enterobacter aerogenes
Escherichia coli
Klebsiella pneumoniae
Proteus vulgaris
Pseudomonas aeruginosa
Coriolus versicolor
Epidermophyton floccosum
Gleophylum trabeum
Microsporum canis

Alternaria alternata
Aspergillus niger
Aureobasidium pullulans
Candida albicans
Chaetomium globosum
Cladosporium cladosporoides
Coniophora puteana
Penicillium funiculosum
Penicillium glaucum
Poria placenta
Saccharomyces cerevisiae
Trametes versicolor
Trichoderma viride
Trichophyton mentagrophytes

Chlorella vulgaris
Nostoc commune
Scenedesmus vacuolatus

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