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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Study period:
February 2005
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005
Report date:
2005

Materials and methods

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

Test material

Constituent 1
Chemical structure
Reference substance name:
Ethyl 3-((1-(4-methylamino-3-nitrophenyl)methanoyl)pyridin-2-yl-amino)propionate
EC Number:
454-450-1
EC Name:
Ethyl 3-((1-(4-methylamino-3-nitrophenyl)methanoyl)pyridin-2-yl-amino)propionate
Cas Number:
429659-01-8
Molecular formula:
C18 H20 N4 O5
IUPAC Name:
ethyl 3-{1-[4-(methylamino)-3-nitrophenyl]-N-(pyridin-2-yl)formamido}propanoate
Test material form:
solid: particulate/powder

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)

Study design

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

Test conditions

Reference substance (positive control):
no

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
50 mg/L
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
118 mg/L
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
7.74 mg/L
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
23.9 mg/L
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
LOEC
Effect conc.:
23.9 mg/L
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
LOEC
Effect conc.:
74.6 mg/L
Basis for effect:
growth rate

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
Biological test results after 72 hours test duration:
EC50: biomass 50.0 mg/l, growth rate 118 mg/l
NOEC: biomass 7.74 mg/l, growth rate 23.9 mg/l
LOEC: biomass 23.9 mg/l, growth rate 74.6 mg/l