Benzalkonium Chloride / Dodecyl dimethyl benzyl ammonium chloride is a kind of cationic surfactant, belonging to nonoxidizing boicide. It can efficiently withhold algae propagation and sludge reproduction. Benzalkonium Chloride also has dispersing and penetrating properties, can penetrate and remove sludge and algae, has advantages of low toxicity, no toxicity accumulation, soluble in water, convenient in use, unaffected by water hardness. 1. Benzalkonium chloride (BKC) is widely used in petroleum, chemical, power, textile and other industries in the circulating cooling water system, to control the bacteria Algae breeding in circulating cooling water system. 2.Benzalkonium chloride (BKC) can be also used as anti-mildew agent, antistatic agent, emulsifying agent and amendment agent in woven and dyeing fields. 3.Benzalkonium chloride (BKC) is also widely used as a disinfectant in the Hospital, Livestock and Personal Hygiene sectors. Dual biocidal and detergency properties ensure high efficacy against Bacteria, Algae and Fungi and enveloped Viruses at exceptionally low ppm concentrations.