Cobalt di(acetate)

Sediment toxicity

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

Test material information

Constituent 1

Reference substance name:

Cobalt dichloride, hexahydrate

IUPAC Name:

Cobalt dichloride, hexahydrate

Constituent 2

Reference substance name:

7791-13-1

EC Number:

616-574-6

Cas Number:

7791-13-1

IUPAC Name:

7791-13-1

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