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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Freshwater:

The water accommodated fraction (WAF) of hydrocarbons, C11-C14, isoalkanes, cyclics, <2% aromatics, did not produce a 50% effect (immobility) with Daphnia magna at a loading of 1000 mg/L after a 48-hour exposure. Therefore, the 48-hour LL50 is reported as >1000 mg/L. There was no mortality at the 1000 mg/L loading level after 48 hours. Therefore, the 48-hour LL0 for mortality is reported as 1000 mg/L. There was also no mortality in the control. These data are used as read-across data to hydrocarbons, C12-C16 isoalkanes, cyclics, <2% aromatics.

Marine:

The water accommodated fraction of hydrocarbon, C12-C16, isoalkanes, cyclics, <2% aromatics, did not produce a 50% effect (mortality) with Chaetogammarus marinus at a loading of 10,000 mg/L after a 96-hour exposure. Therefore, the 96-hour LL50 is reported as >10,000 mg/L. There was no mortality at the 10,000 mg/L loading level after 96 hours and no effects on swimming and feeding behavior were observed. Therefore, the 96-hour NOELR for these endpoints is reported as 10,000 mg/L. There was also no mortality in the control.

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Additional information

Freshwater:

The water accommodated fraction (WAF) of hydrocarbons, C11-C14, isoalkanes, cyclics, <2% aromatics, did not produce a 50% effect (immobility) with Daphnia magna at a loading of 1000 mg/L after a 48-hour exposure. Therefore, the 48-hour LL50 is reported as >1000 mg/L. There was no mortality at the 1000 mg/L loading level after 48 hours. Therefore, the 48-hour LL0 for mortality is reported as 1000 mg/L. There was also no mortality in the control. These data are used as read-across data to hydrocarbons, C12-C16 isoalkanes, cyclics, <2% aromatics.

Marine: The water accommodated fraction of hydrocarbons, C12 -C16, isoalkanes, cyclics, <2% aromatics, did not produce a 50% effect (mortality) with Chaetogammarus marinus at a loading of 10,000 mg/L after a 96-hour exposure. Therefore, the 96-hour LL50 is reported as >10,000 mg/L. There was no mortality at the 10,000 mg/L loading level after 96 hours and no effects on swimming and feeding behavior were observed. Therefore, the 96-hour NOELR for these endpoints is reported as 10,000 mg/L. There was also no mortality in the control.