Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 200-864-0 | CAS number: 75-35-4
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
An appropriate and sensitive bioassay for organic volatile compound was conducted on Chlamydomonas reinhardtii (72 h, static). An EC50 of 9.12 mg/L was determined.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 9.12 mg/L
- EC10 or NOEC for freshwater algae:
- 3.94 mg/L
Additional information
Two studies were selected to assess the toxicity of 1,1-dichloroethylene on aquatic algae.
The study of Brack and Rottler (1994) was conducted on freshwater living species Chlamydomonas reinhardtii, with an exposure duration of 72 h in a static test system. The results are well documented and scientifically acceptable: EC50of 9.12 mg/L and EC10of 3.94 mg/L.
The study of Geyer et al. (1985) was conducted on freshwater living species Scenedesmus subspicatus with an exposure duration of 96 h and resulted in an EC50of 410 mg/L and an EC10of 240 mg/L. However, the test system is not appropriate for volatile compound and reported values are probably higher than the real one.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
