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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: EC Methods for Determination of Ecotoxicity, Annex to Directive 92/69/EEC (O.J. No. L383A, 1992) Part C, Method 3 “Algal Inhibition Test” and Procedure 201 of the “Guidelines for Testing of Chemicals” of the Organisation for Economic Co-operation and Deve
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Test organisms

Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)

Study design

Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
72 h

Test conditions

Hardness:
ca. 7.50-9.40
Test temperature:
20.8-24deg. C
pH:
7.12-9.42

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
1.19 mg/L
Duration:
72 h
Dose descriptor:
other: EbC10
Effect conc.:
7.33 mg/L
Duration:
72 h
Dose descriptor:
other: EbC50
Effect conc.:
14.3 mg/L
Duration:
72 h
Dose descriptor:
other: ErC10
Effect conc.:
14 mg/L
Duration:
72 h
Dose descriptor:
other: ErC50
Effect conc.:
27.7 mg/L

Applicant's summary and conclusion

Conclusions:
After 72 hours of exposure to M3MC-Carboxylate, the EbC50 and ErC50, respectively were 14.3 and 27.7 mg/L.
The “no observed effect concentration” (NOEC) for both area under the growth curve and growth rate was 1.19 mg/L.
Executive summary:

After 72 hours of exposure to M3MC-Carboxylate, the EbC50 and ErC50, respectively were 14.3 and 27.7 mg/L. The “no observed effect concentration” (NOEC) for both area under the growth curve and growth rate was 1.19 mg/L.