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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

Short-term aquatic ecotoxicological data are available for fresh water and marine fish using analog and structurally similar chemicals. In fish, there are report data reviewed for sheepshead minnow (Cyprinodon vaiegatus), rainbow trout (Oncorhynchus mykiss) and the fathead minnow (Pimephales promelas), performed according to either US EPA method OTS 797.1400 or OECD TG 203. No toxicity was noted in any of these studies at highest test concentrations tested.  

Key value for chemical safety assessment

LC50 for freshwater fish:
100 mg/L
LC50 for marine water fish:
10 000 mg/L

Additional information

Short-term aquatic ecotoxicological data are available for fish. In fish, there are report data reviewed for sheepshead minnow (Cyprinodon vaiegatus), rainbow trout (Oncorhynchus mykiss) and the fathead minnow (Pimephales promelas), performed according to either US EPA method OTS 797.1400 or OECD TG 203. No toxicity was noted in any of these studies at highest test concentrations tested. In a study performed according to OECD TG 203 (Fish, Acute Toxicity Test), sheepshead minnow (Cyprinodon variegatus) were exposed to a control and a 10,000 mg/L Water Accommodated Fraction (WAF) loading rate of benzenesulfonic acid C20-24 alkyl calcium salt (CAS 70024-71-4; an analog for the group of C20-C24 alky calcium salts) for 96 hours under a static renewal rate of every 24 hours until the 96 hour test period was achieved (Nicholson, 1986). No mortality was observed during the course of the study in any of the exposure groups; therefore, the 96-hour LL50 is > 10,000 mg/L, based on mean measured concentrations. Similar studies performed according to the same conditions as stated above were also conducted on the sheepshead minnow using the test substances sulfonic acid, petroleum, calcium salt (61789-86-4) and benzenesulfonic acid, mono and dialkyl derivatives, magnesium salt (71786-47-5). These tests both yielded a 96-hour static renewal LL50 is >10,000 mg/L nominal WAF (Nicholson, 1986).

Other fish studies located were conducted on the rainbow trout (Onchorhynchus mykiss) performed as a series of exposures to several read-across chemicals according to OECD TG 203 (Goodband, 2005). In this study, fish were exposed under semi-static conditions to nominal concentrations of 0 mg/l or 100 mg/l concentration of Benzenesulfonic acid, C14-24- branched linear alky derivatives, calcium salts (115733-09-0) or sulphonic acids, petroleum, calcium salts (61789-86-4) or sulfonic acids, petroleum, barium salts (61790-48-5) or sulphonic acids, petroleum, sodium salts (68608-26-4), independently. In each study, after 96 hours the LL50 was >100 mg/L nominal WAF.

Studies conducted on the fathead minnow (Pimephales promelas) were performed according to US EPA method OTS 797.1400 using the chemicals benzenesulfonic acid, mono C15-30 branched alkyl and di C11-13 branched linear alkyl derivatie, calcium salt, over based (71486 -79-8) and benzenesulfonic acid, mono and dialkyl derivative, magnesium salt (71786-47-5) (Ward, 1993). In both of these studies, fathead minnows were exposed to four concentrations of each chemical (0 mg/l, 100 mg/l, 300 mg/l and 1000 mg/l nominal WAF) for 96 hours. In both cases, the 96-hour LL50 was >1000 mg/l nominal WAF.