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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Short term toxicity to aquatic invertebrates was available for 2 streams within this Category.  48h EC50 ranged from 1.2 - 2.7 mg/l with one study citing a 48h NOEC of 1.8 mg/l.  48 h EL50 ranged 1.2 -3.3 mg/l.  Tests were conducted on Daphnia

Key value for chemical safety assessment

Additional information

All studies were provided by ExxonMobil (2003)

CAS No 68513 -69 -9 and 68921 -67 -5 After Daphnia magna were exposed to WAFs prepared from Pyrolysis C10+ Fuel Oil for 48 hours, the EL50 was 1.2 mg/L and EC50 was 1.2 mg/L. This study was GLP compliant and followed a standard guideline. It is considered reliable and suitable for use as a key study.

CAS No 68513 -69 -9 The 48hr EL50 was determined to be 3.3mg/l and the 48hr EC50 was determined to be 2.7mg/l. This study is GLP compliant and follows a standard guideline. The nature of the stream was taken into account and WAFs were used. This study is considered reliable and suitable for use as a supporting study.