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EC number: 203-458-1 | CAS number: 107-06-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Based on nominal concentrations the 72-hour EC50 values for growth rate Selenastrum capricornutum was estimated to be 166 mg/L (closed system) and 213 mg/L (open system), based on measured values of 1,2-dichlorethane.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 166 mg/L
Additional information
The acute toxicity of 1,2-dichloroethane upon the growth of a freshwater green alga (Selenastrum capricornutum) was observed over a period of 72 hours in a static test according to OECD guideline 201 adapted for volatile substances (closed system enriched in CO2). The EC50 for biomass was determined to be 166 mg/L.
Further on, the following additional information on toxicity to algae and cyanobacteria is available:
Species |
EC50 |
Author |
Haematococcus pluvialis |
> 1000 mg/L (24 h) (change in photosynthetic oxygen production) |
Krebs, F. (1985) |
Desmodesmus subspicatus |
412 mg/L TT (7 days) |
Trenel, J. & Kuehn, R. (1982) |
Desmodesmus subspicatus |
710 mg/L TT (8 days) |
Bringmann, G. % Kuehn, R. (1980) |
Skeletonema costatum |
> 433 mg/L (96 h) |
Syracuse Res. Corp. (1978) |
Mycrocytis aeruginosa |
105 mg/L TT (8 days) |
Bringmann, G. & Kuehn, R. (1978) |
Phaeodactylum tricornutum |
340 mg/L (primary productivity) |
Pearson, C.R.et al.(1975) |
Desmodesmus subspicatus |
189 mg/L |
Freitag, D.et al.(1994) |
Haematococcus pluvialis |
130 mg/L (inhibition of oxygen production) |
Knie, J. (1983) |
Reference list
Bringmann, G. & Kuehn, R. (1978): Vom Wasser 50, 45 - 60.
Bringmann, G. & Kuehn, R. (1980): Water Research 14, 231 - 241.
Freitag, D., Ballhorn, L., Behechti, A., Fisher, K. & Thumm, W. (1994): Structural configuration and toxicity of chlorinated alkanes; Chemosphere 282: 253-259.
Knie, J., Haelke, A., Juhnke, I., Schiller, W. (1983): Ergebnisse der Untersuchungen von chemischen Stoffen mit vier Biotests; Dtsch. Gewaesserkundl. Mitt. 27(3), 77-79.
Krebs, F. (1985): Bundesanstalt fuer Gewaesserkunde, 59 - 64, 73 - 75.
Pearson, C.R. & McConnell, G. (1975): Chlorinated C1 and C2 hydrocarbons in the marine environment. Proc. R. Soc. London, Ser. B. 189 (1096), 305-332.
Trenel, J. & Kuehn, R. (1982): Inst. Wasser-, Boden-, Lufthyg. Bundesgesundheitsamt, Juli 1982, 12 - 14, 25 - 27, Anlage 2 (23 - 28), Anlage 4 (1 - 5).
Syracuse Res. Corp. (1978): NTIS/OTS 0511060 # 40-7848049.
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