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Ecotoxicological information

Additional ecotoxological information

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Administrative data

Endpoint:
additional ecotoxicological information
Type of information:
other: BUA report
Adequacy of study:
other information
Reliability:
other: BUA report
Rationale for reliability incl. deficiencies:
other: No reliability is given as this is a summary entry for the BUA report.

Data source

Referenceopen allclose all

Reference Type:
secondary source
Title:
1,2,4-Trichlorbenzol - BUA-Stoffbericht 17 - (Dezember 1987) [Report in German]
Author:
Beratergremium für umweltrelevante Altstoffe (BUA)
Year:
1987
Bibliographic source:
Wissenschaftliche Verlagsgesellschaft VCH, Weinheim, ISSN: 0179-2601
Reference Type:
publication
Title:
Long-term Effects of 1,2,4-Trichlorobenzene on Freshwater Plankton in an Outdoor-Model-Ecosystem.
Author:
Lay, J. P. et al.
Year:
1985
Bibliographic source:
Bull. Environ. Contam. Toxicol. Vol. 34, No. 5, 761 - 769
Reference Type:
publication
Title:
Effects of 1,2,4-Trichlorobenzene on Estuarine Macrobenthic Communities Exposed via Water and Sediment.
Author:
Tagatz, M. E. et al.
Year:
1985
Bibliographic source:
Ecotox. Environ. Saf. 10, 351 360

Materials and methods

GLP compliance:
not specified
Type of study / information:
BUA report

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

BUA report (1987):

In a model ecosystem with daphnids and different phytoplankton species effects of 1,2,4-TCB were reported over a study period of 5 weeks. 1,2,4-TCB was added once at the beginning in a concentration of 0,25 mg/l. Daphnia magna and Daphnia pulex showed significant more sensitivity in the tested natural ecosystem (90% - 100% mortality) than in laboratory studies (EC50 = 1.2 mg/l 21 mg/l). Phytoplankton didnt show significant effects compared to the control (Lay, 1985).

 

In a seawater ecosystem the lowest observed concentration of 1,2,4-TCB affecting the average number of individuals was 0.04 mg/l for molluscs, 0.4 mg/l for arthropods and 4 mg/l for annelids. When 1,2,4-TCB was exposed to the ecosystem via sediment the lowest concentrations effecting the average number of individuals were 0.1 mg/l for molluscs and echinoderms and 1 mg/l for arthropods and annelids (Tagatz et al., 1985).

 

Conclusion:

Ecosystems show effects at 0,04 mg/l (Tagatz et al., 1985) and above.

Applicant's summary and conclusion