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Diss Factsheets

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

One reliable (Klimisch 1) short-term toxicity study for fish was available for Cyclohexanol, 4-C11-12-alkyl, branched.  The short-term toxicity of Cyclohexanol, 4-C11-12-alkyl, branched to fathead minnows (Pimephales promelas) was reported by Brougher et al., (2012) in an OECD 203 guideline and GLP compliant study. Fathead minnows were exposed to the test substance in nominal concentrations based on WAF loading rates for 96 hours, resulting in a 96-hr LL50 of >100 mg/L.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
100 mg/L

Additional information

One reliable (Klimisch 1) short-term toxicity study for fish was available for Cyclohexanol, 4-C11-12-alkyl, branched. The short-term toxicity of Cyclohexanol, 4-C11-12-alkyl, branched to fathead minnows (Pimephales promelas) was reported by Brougher et al., (2012) in an OECD 203 guideline and GLP compliant study.

Fathead minnows (Pimephales promelas) were exposed for 96 hours under static-renewal conditions to five nominal water accommodated fraction (WAF) loading rates of Cyclohexanol, 4-C11-12-alkyl, branched ranging from 6.3 to 100 mg/L. Based on WAF loading rates, the 96 hour LL50 value was >100 mg/L, the highest concentration tested. Fathead minnows exposed to Cyclohexanol, 4-C11-12-alkyl, branched at concentrations ≤100 mg/L appeared normal with no mortality or overt signs of toxicity. The 96 hour no-mortality level and the NOELR were both 100 mg/L.