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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

EC50 (72 h) > 100 mg/L for Pseudokirchnerella subcapitata (OECD 201)

Key value for chemical safety assessment

Additional information

One study is available on the toxicity of 3-(Hexyloxy)-1.2-propanediol (CAS No. 10305 -38 -1) to algae. This key study was performed according to OECD guideline 201 and GLP (Bouwman, 2013). The test organism Pseudokirchnerella subcapitata was exposed to the test substance in a static system for 72 hours, at nominal test concentrations of 0, 0.10, 1, 10 and 100 mg/L Analyses of the samples taken during the study were based on total organic carbon, since it proved impossible to develop a specific analytical method to accurately measure 3-(Hexyloxy)-1.2-propanediol concentrations in aquatic samples. Results showed measured carbon concentrations of 62.5, 63.3 and 61.0 mg/l in samples taken from nominally 100 mg/l at the start, after 24 and 72 hours of exposure, respectively. These results showed that the measured concentration was stable and, based on a carbon content of 61%, actual concentrations were between 100 and 104% relative to nominal. Given these results, the effect parameters were based on nominal concentrations. No significant inhibition of growth rate and yield was observed at 100 mg/L, and hence, NOEC and EC50 values were reported as ≥ 100 mg/L and > 100 mg/L, respectively.