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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 test substance VC reduced growth rate of this fresh water algae species (Pseudokirchneriella subcapitata) significantly at 0.84 mg/L and higher. The ErC50 for growth rate reduction (ErC50: 24-96h) was 3.2 mg/L with a 95% confidence interval ranging from 2.2 to 4.9 mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
3.2 mg/L
EC10 or NOEC for freshwater algae:
0.39 mg/L

Additional information

In a 96 h toxicity study conducted according to OECD guideline 201 and GLP, freshwater algae (Pseudokirchneriella subcapitata) were exposed to the test substance at the following nominal concentrations: 0 (blank-control), 0.46, 1.0, 2.2, 4.6, 10 and 22 mg/L. The EC50 for growth rate reduction (24-96h-ErC50) was 3.2 mg/L (95% confidence levels 2.2 - 4.9 mg/L) and the 96h-NOEC for growth rate reduction was 0.39 mg/L, based on average exposure concentrations. The study is considered to be reliable without restrictions.