Registration Dossier

Administrative data

Endpoint:
sediment toxicity: short-term
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Method not in accordance with OECD guidelines. However a standardized test and standard test organism was used.

Data source

Reference
Reference Type:
publication
Title:
Toxicity of metals to a feshwater tubificid worm Tubifex tubifex /Muller)
Author:
Khangarot BS
Year:
1991
Bibliographic source:
Bull Environ Contamin Toxicol 46: 906-912

Materials and methods

Principles of method if other than guideline:
Semi static test, aquatic, 96 h
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Details on test material:
- Analytical purity: reagent grade

Sampling and analysis

Analytical monitoring:
no

Test substrate

Vehicle:
no

Test organisms

Test organisms (species):
Tubifex tubifex

Study design

Study type:
laboratory study
Test type:
semi-static
Water media type:
freshwater
Limit test:
no
Exposure duration
Duration:
96 h
Exposure phase:
total exposure duration

Test conditions

Hardness:
245 mg/L CaCO3
Test temperature:
appr. 30 °C
pH:
appr. 7.6
Dissolved oxygen:
appr. 5.8 mg/L

Results and discussion

Effect concentrations
Duration:
96 h
Dose descriptor:
EC50
Effect conc.:
139.32 mg/L
Nominal / measured:
nominal
Conc. based on:
element
Remarks:
Co
Basis for effect:
other: immobility

Applicant's summary and conclusion