Registration Dossier
Registration Dossier
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EC number: 200-338-0 | CAS number: 57-55-6
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The lowest 48-h LC50 in the fresh water invertebrate Ceriodaphnia dubia is 18340 mg/l. In marine water, the lowest 96-h LC50 is 18800 mg/l in Mysidopsis bahia (new name: Americamysis bahia)
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 18 340 mg/L
Marine water invertebrates
Marine water invertebrates
- Effect concentration:
- 18 800 mg/L
Additional information
There are several guideline studies available for freshwater invertebrates. The most critical study for is therefore chosen as the key study. For freshwater invertebrates the lowest observed effect concentration is a 48-h LC50 value of 18340 mg/l in Ceriodaphnia dubia (Pillard, 1995). In marine water, the lowest 96-h LC50 is 18800 mg/l in Mysidopsis bahia (new name: Americamysis bahia) (ARCO Chemical Company, 1990). Both values will be used in the assessment.
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.
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