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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
Fatty acids, C16-18 and C18-unsatd., Et esters
EC Number:
285-206-0
EC Name:
Fatty acids, C16-18 and C18-unsatd., Et esters
Cas Number:
85049-36-1
Molecular formula:
UVCB substance, not univocal molecular formula available
IUPAC Name:
UVCB substance, no IUPAC name available

Sampling and analysis

Analytical monitoring:
yes
Details on sampling:
Liquid/Liquid extraction with dichloromethan

Test solutions

Vehicle:
yes
Details on test solutions:
5 mg/L with ethanol as vehicule

Test organisms

Test organisms (species):
Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Details on test organisms:
BREEDING CONDITIONS:
- culture in lab
- Temperature : 23 °C +/- 2 °C
- Brightness : continuous between 6000 and 10000 Lux
- Breeding environment

Study design

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

Test conditions

Test temperature:
23 °C +/- 2 °C
pH:
8.1 +/- 0.2
Details on test conditions:
cintinuous light
Reference substance (positive control):
yes
Remarks:
Potassium dichromate

Results and discussion

Effect concentrations
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
> 282 µg/L
Nominal / measured:
meas. (geom. mean)
Conc. based on:
test mat.
Basis for effect:
growth rate
Results with reference substance (positive control):
1.36 mg/L

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
Fatty acid ethyl ester is non toxic to algea at solubility limit.