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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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

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Description of key information

In a test performed according to the OECD 201 testing Guideline, the concentrations of test item causing a 50 % and 10% reduction in growth rate of Pseudokirchneriella subcapitata were estimated to be:

72h-EC10 = 6.2 µg/L (95% CI: 4.8 - 7.3 µg/L)

72h-EC50 = 13.9 µg/L (95% CI: 12.6 - 15.7 µg/L)

In a test performed also according the OECD 201 testing Guideline for an analogue (1,10-decanediyl diacrylate; 13048-34-5) of the test item with the same species, close 72h-EC10 and 72h-EC50 values were obtained (26.2 µg/L and 45 µg/L, respectively).

Key value for chemical safety assessment

EC50 for freshwater algae:
13.9 µg/L
EC10 or NOEC for freshwater algae:
6.2 µg/L

Additional information

This study was designed to determine the effects of the test item on the growth of Pseudokirchneriella subcapitata in a 72-hour test according to the OECD 201 Guideline.

 Due to the viscous property of the test item tests solutions were prepared from dilutions of a saturated solution prepared using slow-stirring conditions described in the OECD 123 guideline.

 The results are reported as growth rate and yield inhibitions. The concentrations that result in a 10 and 50% reduction in growth rate (72h-ErC10 and 72h-ErC50, respectively) and yield (72h-EyC10 and 72h-EyC50, respectively) were determined.