Registration Dossier
Registration Dossier
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EC number: 418-780-1 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The NOEC for named parameters is 32 mg/L, the LOEC is 100 mg test item/L.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 100 mg/L
- EC10 or NOEC for freshwater algae:
- 32 mg/L
Additional information
There has been done no testing of beta-Cyclodextrin, acetate in a study according to OECD 201.
Therefore two read-across substances have been evaluated instead:
beta-Cyclodextrin (CAS RN 7585 -39 -9) and hydroxypropyl-beta-Cyclodextrin (CAS RN 128446 -35 -5).
beta-Cyclodextrin is the primary degradation product of beta-Cyclodextrin, acetate (readily biodegradeable, OECD 301D).
Hydroxypropyl-beta-Cyclodextrin has a similar structure but is not readily biodegradeable and is therefore considered as
a worst-case read-across approach for acute toxicity to aquatic algae.
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