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EC number: 212-825-5 | CAS number: 872-36-6
Toxicity to aquatic algae and cyanobacteria
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.
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