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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
Study period:
Not specified
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted to GLP (taken from SNIF file). Registrant referring to studies >12 years old at the permission of ECHA.

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1999
Report date:
1999

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.3 (Algal Inhibition test)
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
-
EC Number:
432-130-2
EC Name:
-
Cas Number:
119345-01-6
Molecular formula:
Not applicable ( a generic molecular formula cannot be provided for this UVCB substance)
IUPAC Name:
Reaction products of phosphorous trichloride, with 1,1′-biphenyl and 2,4-bis(1,1-dimethylethyl)phenol
Details on test material:
no data
Specific details on test material used for the study:
Details on properties of test surrogate or analogue material (migrated information):
no data

Sampling and analysis

Analytical monitoring:
not specified
Details on sampling:
no data

Test solutions

Vehicle:
not specified
Details on test solutions:
Identity and concentration of auxillary solvent for dispersal: none

Test organisms

Test organisms (species):
Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Details on test organisms:
no data

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
72 h
Post exposure observation period:
no data

Test conditions

Hardness:
24 mg CaCO3/l
Test temperature:
no data
pH:
no data
Dissolved oxygen:
no data
Salinity:
Not applicable.
Nominal and measured concentrations:
no data
Details on test conditions:
no data
Reference substance (positive control):
not specified

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
>= 0.55 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
>= 0.55 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
> 0.55 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
> 0.55 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
biomass
Details on results:
%Concentration loss over test: .....24
Results with reference substance (positive control):
no data
Reported statistics and error estimates:
no data

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
EC50 (biomass & growth rate) ≥ 0.55 mg/l ; NOEC (biomass & growth rate) > 0.55 mg/l.
The substance demonstrated no effects at the limit of solubility in water.
Executive summary:

Information from migrated NONS file, as per inquiry number 06-0000020725-70-0000, permission to refer granted by ECHA.

Study conducted to GLP (taken from SNIF file). Registrant referring to studies >12 years old at the permission of ECHA.

 

EC50 (biomass & growth rate) ≥ 0.55 mg/l

NOEC (biomass & growth rate) > 0.55 mg/l

 

The substance is not classified.