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Long-term toxicity to aquatic invertebrates

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Description of key information

No chronic effects to aquatic invertebrates up to the limit of water solubility.

Key value for chemical safety assessment

Additional information

Since no studies investigating the long-term toxicity to aquatic invertebrates of 2-Hydroxyethyl Palmitate (CAS 4219-49-2)

are available for this endpoint, in accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5 a read across to the structurally related category member butylene glycol dicaprylate/dicaprate (CAS 853947-59-8) was conducted. This read-across is justified in detail in the overall summary (IUCLID chapter 6.1) and within the category justification in IUCLID Section 13. In this case of read-across, the best suited (highest degree of structural similarity, nearest physico-chemical properties) read-across substance was used for the assessment. Nevertheless,as it can be seen in the data matrix of the category justification in section 13 and the overall summary, all reliable data in the category support the hazard assessment of each category member by showing a consistent pattern of results.The study was performed according to the OECD Guideline 211 under GLP conditions (Hertl, 2001). Daphnia magna was exposed to individually prepared Water Accommodated Fractions (WAF’s) of nominal 6.25, 12.5, 25, 50 and 100 mg/L under semi-static conditions. Analytical determination of test solution concentration resulted in very low concentrations of 0.03 mg/L in freshly prepared medium and concentrations below the detection limit of 0.01 mg/L before test medium renewal periods after every 48 or 72 h, respectively. After 21 d, no particular signs of intoxication, no mortality and no effects on the mean reproduction rate were observed throughout the test resulting in an EL50 of > 0.02 mg/L (measured, arithm. mean) and a NOELR of ≥ 0.02 mg/L (measured, arithm. mean).Based on the results from a structurally related read-across substance (in accordance to Regulation (EC) No 1907/2006 Annex XI, 1.5) which is characterized by a similar ecotoxicological profile and a similar structure, it can be concluded that

2-Hydroxyethyl Palmitate (CAS 4219-49-2)

will not exhibit chronic effects to aquatic invertebrates up to the limit of water solubility.