Sodium decyl sulphate

Short-term toxicity to fish

Description of key information

48hr LC50 (Cyprinus carpio pre-larvae, mortality) = 13 mg/L (nominal concentration, Japanese Industrial Standard JIS K0102)

Key value for chemical safety assessment

Fresh water fish

Fresh water fish

Effect concentration:

13 mg/L

Additional information

Three reliable short-term studies with fish are available for C10AS Na (CAS 142-87-0). In the key, non-GLP study performed according to Japanese Industrial Standard JIS K0102, 1-week old carp pre-larvae (Cyprinus carpio) were exposed to C10AS Na for 48 hours under static conditions (Kikuchi et al. 1976a). Based on pre-larvae mortality, the LC50 value was 13 mg/L (nominal concentrations in agreement with the measured ones). Since the obtained value was the most critical, it is considered as a reliable short-term LC50 value for fish. The same authors provide supporting information on Carp egg hatching rate influenced by C10AS Na (Kikuchi 1976b). Fish eggs were exposed for 96 hours to the test concentrations up to 100 mg/L (nominal concentrations in agreement with the measured ones). The study followed Japanese Industrial Standard JIS K0102. Inhibition of hatching rate could not be calculated because hatching rate was higher at 70 mg/L (ca. 40%) than at 50 mg/L (ca. 12%). No hatching at 100 mg/L was observed. Hatching rate in the control group was 87.3%. Another supporting, non-GLP study performed according to ISO 7346-1 guidance is available (Richterich 2001). Mortality of zebrafish (Danio rerio) was determined after 24, 48, 72 and 96 hours of exposure to five test concentrations up to 1000 mg/L of product containing 30% of active ingredient and 70% water (nominal concentrations). Analytical monitoring was not performed. The results showed that the 96-hour LC50 value was 177 mg a.i./L (nominal concentration).