Registration Dossier
Registration Dossier
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EC number: 931-254-9 | CAS number: 64742-49-0
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
There is no data available for this substance. However, key and supporting data is available for the structural analogues Hydrocarbons, C6-C7, isoalkanes, cyclics, <5% n-hexane and Hexane. The data is read across to this substance based on analogue read across and a discussion and report on the read across strategy is provided as an attachment in IUCLID Section 13.
Hydrocarbons, C6-C7, isoalkanes, cyclics, <5% n-hexane presented a 48-h EL50 (mobility) for Daphnia magna of 3.0 mg/L (WAF).
Hexane presented a 48-h LC50 (mortality) for Daphnia magna of 45 mmol/m3 (WAF).
Key value for chemical safety assessment
Additional information
Two study reports were available and input as endpoint records. The studies were scientifically reliable according to Klimish (Klimish et al., 1997) scoring (Klimish 1 and 2).
The study from Shell (1994) examined the short-term toxicity of the test substance SBP 60/95 LNH (Hydrocarbons, C6-C7, isoalkanes, cyclics, <5% n-hexane) to Daphnia magna. Groups of 10 daphnids were exposed to loading rates of 0, 0.89, 2, 4.5, 10, or 22 mg/L test substance. Daphnids were exposed for 48 h, and there was no renewal of test solution. Daphnids were observed at 24 and 48 h after start of exposure for immobilization. The 48-h EL50 for Daphnia magna was 3.0 mg/L (WAF).
The study from Bobra et al. (1983) examined the toxicity of n-hexane to the aquatic invertebrate Daphnia magna. Groups of 10 daphnids were exposed to concentrations of up to 110 mmol/m3 (WAF) of test substance for 48 h. After the exposure, the daphnids were observed for mortality. The 48-h LC50was 45 mmol/m3(WAF).
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