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Ecotoxicological information

Sediment toxicity

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Administrative data

Endpoint:
sediment toxicity: short-term
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Basic data given: acceptable publication

Data source

Reference
Reference Type:
publication
Title:
Untersuchungen ueber die akute toxische Wirkung von Nitrilotriessigsaeure (NTA)
Author:
Jancovic M, Mann H
Year:
1969
Bibliographic source:
Arch. Fischereiwiss. 20: 178-181

Materials and methods

Principles of method if other than guideline:
Method: other: no data
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Test substance: Edetic acid (EDTA)
Product name: Idranal II
Purity/content: no data
Specific details on test material used for the study:
Details on properties of test surrogate or analogue material (migrated information):
no data available

Sampling and analysis

Analytical monitoring:
not specified
Details on sampling:
no data available

Test substrate

Vehicle:
not specified
Details on sediment and application:
no data available

Test organisms

Test organisms (species):
Tubifex tubifex
Details on test organisms:
no data available

Study design

Study type:
laboratory study
Test type:
static
Water media type:
freshwater
Type of sediment:
not specified
Limit test:
no
Exposure duration
Duration:
24 h
Exposure phase:
total exposure duration
Post exposure observation period:
no data available

Test conditions

Hardness:
12 degree German hardness
Test temperature:
18 - 21 °C
Details on test conditions:
The animals were held in glass dishes with or without aeration.
Sufficient oxygen content of the test water was ensured.
Tap water from the city of Hamburg was used in all freshwater experiments.
Over 100 animals were used per experiment.
A second test series was run in parallel.
The animals were observed for at least 24 hours, in some cases even 48 hours and lethality were recorded.
Reference substance (positive control):
not specified

Results and discussion

Effect concentrations
Duration:
24 h
Dose descriptor:
LC100
Effect conc.:
380 other: mg/l
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified