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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
see attached justification
Reason / purpose for cross-reference:
read-across: supporting information
Reason / purpose for cross-reference:
read-across source
Analytical monitoring:
no
Test organisms (species):
Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
72 h
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
1.5 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other: 95%-CI = 1.2 - 1.9 mg/L
Key result
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
0.125 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Validity criteria fulfilled:
yes
Conclusions:
The 72-h EC50 of DMDS against green algae, read-across from DMPT and corrected for molecular weight, is 0.89 mg/L. The substance should thus be classified as Aquatic Chronic 1.

Description of key information

The 72-h EC50 of DMDS against green algae, read across from DMPT and corrected for molecular weight, is 0.89 mg/L. The substance should thus be classified as Aquatic Chronic 1.

Key value for chemical safety assessment

EC50 for freshwater algae:
0.89 mg/L

Additional information