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Acute Fish Toxicity:

Water accommodated fractions of hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, <2% aromatics, produced a 96 -hour LL50 value of >10 -<30 mg/L with rainbow trout, Oncorhynchus mykiss.

Chronic Fish Toxicity:

The hydrocarbons, C9 -C10, n-alkanes, isoalkanes, cyclics, <2% aromatics, estimated freshwater fish 28-day NOELR (No Observed Effect Loading Rate) value is 0.182 mg/l based on growth.

Acute Invertebrate Toxicity:

The water accommodated fraction (WAF) of hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, <2% aromatics, produced a 50% effect (immobility) with Daphnia magna at a loading of >22 -<46 mg/L after a 48-hour exposure.

Chronic Invertebrate Toxicity:

The hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, <2% aromatics, estimated freshwater invertebrate 21-day NOELR (No Observed Effect Loading Rate) value is 0.317 mg/l based on reproduction.

Algal Toxicity:

Growth of alga cultures, as measured by biomass, exposed to water accommodated fractions (WAFs) of hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, <2% aromatics, prepared at 1000 mg/L was inhibited by 50% after 72 hours. Therefore, the 72-hr ELb50 value is reported as 1000 mg/L. In comparison, growth of alga cultures, as measured by growth rate, were not inhibited by more than 50% by the 1000 mg/L WAF after 72 hours. Therefore, the 72-hr ELr50 value is reported as >1000 mg/L. The 72-hr NOELR values for biomass and growth rate are 1 and <1 mg/L, respectively.

Microorganisms Toxicity:

The hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, <2% aromatics, estimated protozoan, Tetrahymena pyriformis, 48-hr EL50 value for this substance is 1.065 mg/L based on growth inhibition.

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