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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Using ECOSAR, the 96-h EC50 is estimated to be 77 mg/l in aquatic algae

Key value for chemical safety assessment

EC50 for freshwater algae:
77 mg/L

Additional information

Due to the fact that vinyl chloride is a gas, no significant concentrations are present in the fresh water and seawater compartment. This is supported by exposure assessment with EUSES. A regional PEC in fresh surface water of 4.18E-06 mg/L and a regional PEC in seawater of 3.44E-07 mg/L were calculated. The maximal local PEC value that was calculated for fresh water was 3.65E-02 mg/L (for S-PVC production). The maximum local PEC value that was calculated for seawater was 3.65E-03 mg/L (for S-PVC production). Since these concentrations are very low, no significant exposure of algae is assumed and therefore short term toxicity tests with algae are not considered necessary.

Only a QSAR value is available for short-term toxicity in aquatic algae. This value will be used in the assessment.