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Ecotoxicological information

Endpoint summary

Administrative data

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Additional information

Toxicity to birds:

Several long-term studies have evaluated the effects of a test substance containing a mixture of normal, iso-, and cyclic paraffins with carbon numbers ranging from C10 to C19 to Mallard ducks and eggs. The effects measured have included survival, growth, organ weight, development, sex ratio, blood parameters. For all endpoints evaluated, the paraffin mixtures did not produce any toxic effects, based on statistical analyses between the control and treatment populations. These data suggest that hydrocarbons, C13-C16, isoalkanes, cyclics, <2% aromatics, would not produce toxic effects to Mallard ducks and eggs under the same test conditions.

The endpoints evaluated included embryonic survival and weight, sex ratio, and development (crown-rump and beak lengths) in eggs; duck body weight, organ (liver, kidney, spleen, and testes) weights, and blood parameters (hematocrit, hemoglobin, plasma sodium, potassium, cholesterol and triglycerides, plasma enzyme activities glutamic oxalacetic transaminase - GOT, lactated deshydrogenase - LDH, alpha-hydroxybutiric acid dehydrogenase - HBDH, and orinithine carbamyl transferase - OCT).