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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Sediment toxicity

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Administrative data

Endpoint:
sediment toxicity: short-term
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: documentation insufficient for assessment

Data source

Reference
Reference Type:
publication
Title:
Toxicity and metabolism studies with EPA priority pollutants and related chemicals in freshwater organisms
Author:
Call DJ, Brooke LT, Ahmad N, RIchter JE
Year:
1983
Bibliographic source:
EPA 600/3-83-095, US EPA, Duluth, MN: 120 p

Materials and methods

Principles of method if other than guideline:
Ten to 20 midge larvae in their 3rd or 4th instar stage of developement were exposed in 8.5 cm glass dishes filled to a depth of 2.6 cm (ca. 200 ml volume) with test solution. Each chamber with a 3 mm glass overflow tube contained lake water plus a small amount of food (ratio of 1 l : 0.0025 l), with a fine layer of sand on the bottom.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
1,4-dichlorobenzene
EC Number:
203-400-5
EC Name:
1,4-dichlorobenzene
Cas Number:
106-46-7
Molecular formula:
C6H4Cl2
IUPAC Name:
1,4-dichlorobenzene
Details on test material:
purity 97%

Sampling and analysis

Analytical monitoring:
yes
Details on sampling:
concentrations were analysed daily

Test organisms

Test organisms (species):
other: Tanytarsus dissimilis
Details on test organisms:
Tanytarsus dissimilis Johanson 1937

Study design

Study type:
laboratory study
Test type:
other: static or flow-through
Water media type:
freshwater
Type of sediment:
not specified

Results and discussion

Effect concentrations
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
13 mg/L
Conc. based on:
test mat.
Basis for effect:
mortality
Remarks on result:
other: 10.9-15.6

Any other information on results incl. tables

The author recommends organisms such as Tanytarsus dissimilis with consistently high tolerances to a broad range of chemical classes should receive minimal effort.

Applicant's summary and conclusion