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EC number: 269-144-1 | CAS number: 68188-18-1
In several tests, performed within 28 days, a degradation of 77 to 99 % was determined for Paraffin oils, sulfochlorinated, saponified; and hence the substance is considered to be "Readily Biodegradable".
Degradation in STPs
Comprehensive surfactant monitoring programs, mainly on sewage treatment plants, have been conducted in various European countries by the surfactant- and detergent manufacturers in conjunction with state institutions. The results were published e.g. by Waters and Feijtel (1995), Matthijs et al. (1996), Schöberl et al. (1994, 1996) and by Schöberl (1995). Principle interest was first directed to the concentrations of linear alkyl benzylsulfonates (LAS), because this anionic surfactant quantitatively represented the most important detergent and cleanser raw material. After these studies, the elimination of linear alkyl benzylsulfonates (LAS), alkyl polyetheylene glycol ethers (AEx), alkyl ether sulfates (AExS), alkyl sulfates (AS) and soaps were studies comparatively in waste water treatment plants in the Netherlands (Matthijs et al., 1996). The mean elimiation rate for LAS is described to be 99.2%.
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