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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Study period:
72 hours
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Justification for type of information:
Performed to current guidelines and well reported.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
ISO 10253 (Water quality - Marine Algal Growth Inhibition Test with Skeletonema costatum and Phaeodactylum tricornutum)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Dodecenylsuccinic acid, compound with 2,2',2''-nitrilotriethanol (1:1)
EC Number:
264-867-9
EC Name:
Dodecenylsuccinic acid, compound with 2,2',2''-nitrilotriethanol (1:1)
Cas Number:
64396-12-9
Molecular formula:
C16H28O4.C6H15NO3
IUPAC Name:
Succinic acid, dodecenyl-, triethanolamine salt (1:1)
Test material form:
liquid
Details on test material:
Commercial grade containing approximately 45% actives
Specific details on test material used for the study:
TEST MATERIAL: SRK 184/14
Batch / Lot: NBN
Activity ca 60%

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
yes
Details on test solutions:
Supplied as water-based mixture, ca 40% actives

Test organisms

Test organisms (species):
Skeletonema costatum

Study design

Test type:
static
Water media type:
saltwater
Limit test:
no
Total exposure duration:
72 h

Test conditions

Test temperature:
20 C

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
ca. 47 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
ca. 678 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
ca. 1 490 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
ca. 600 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
growth rate
Details on results:
The substance appeared to inhibit growth initially, but the effect was quickly reduced, most likely as a result of degradation of the substance to succinic acid derivatives and triethanolamine.

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
The substance appeared to inhibit growth initially, but the effect was quickly reduced, most likely as a result of degradation of the substance to succinic acid derivatives and triethanolamine.