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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

The key study is a 72-hour exposure using Desmodesmus subspicatus which was used to determine EL50s and NOELRs.  

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
100 mg/L

Additional information

The no observed effect concentration for growth inhibition (NOErLR) was 100 mg/l. At 72 hours, the median effect loading rate with respect to growth inhibition (ErLR50) of Reaction Product of 1-chloro-2,3-epoxypropane, sodium hydroxide, sodium carbonate and water to Desmodesmus subspicatus was estimated to be >100 mg/l.

In a supporting study, the effect of glycerin exposure over an 8 day exposure period was examined with Scenedesmus quadricauda and Microcystis aeruginosa. Diffferences in turbidity were measured after 8 days and values greater than 3% (EC3) were considered significant. The EC3 was >10,000 mg/L and 2,900 mg/L for S. quadricauda and M. aeruginosa.