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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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: information from migrated NONS file as per inquiry # [06-0000014790-71-0000], permission to refer granted by ECHA

Data source

Reference
Reference Type:
other: body responsible for the test
Title:
Unnamed
Year:
2011

Materials and methods

Principles of method if other than guideline:
ISO international standard 8692, First edition 15 Nov 1989
ECC Directive 92/69, Part C: Method for the determination of ecotoxicity, Publication No. L383, C-3:"Algal Inhibition Test" adopted Dec. 1992
OECD guideline for testing of chemicals, guideline No. 201: "Algae, growth inhibition test", adopted Jun. 7,1984
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
N,N',N'',N'''-tetrakis(4,6-bis(butyl-(N-methyl-2,2,6,6-tetramethylpiperidin-4-yl)amino)triazin-2-yl)-4,7-diazadecane-1,10-diamine
EC Number:
401-990-0
EC Name:
N,N',N'',N'''-tetrakis(4,6-bis(butyl-(N-methyl-2,2,6,6-tetramethylpiperidin-4-yl)amino)triazin-2-yl)-4,7-diazadecane-1,10-diamine
Cas Number:
106990-43-6
Molecular formula:
C132H250N32
IUPAC Name:
N,N',N'',N'''-tetrakis(4,6-bis(butyl-(N-methyl-2,2,6,6-tetramethylpiperidin-4-yl)amino)triazin-2-yl)-4,7-diazadecane-1,10-diamine

Test organisms

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

Study design

Total exposure duration:
72 h

Test conditions

Hardness:
ca. 24 mg CaCO3/L

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
ca. 1.2 mg/L
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
ca. 6.5 mg/L
Basis for effect:
growth rate

Applicant's summary and conclusion

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