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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to aquatic invertebrates

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Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: These data were published in the peer-reviewed scientific literature. Though the studies were not performed under Good Laboratory Practices nor according to a validated guideline, the data are sufficiently documented and acceptable.

Data source

Reference
Reference Type:
publication
Title:
Acute Toxicity of Priority Pollutants to Water Flea (Daphnia magna)
Author:
LeBlanc, G.A.
Year:
1980
Bibliographic source:
Bull. Environ. Contam. Toxicol., Vol. 24, Iss. 5, pp. 684-691.

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The study authors employed standard acute toxicity testing methods.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Bromine
EC Number:
231-778-1
EC Name:
Bromine
Cas Number:
7726-95-6
Molecular formula:
Br2
IUPAC Name:
dibromine
Details on test material:
- Name of test material (as cited in study report): Bromine
- Analytical purity: >=80%

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
24 h
Post exposure observation period:
Not reported

Test conditions

Hardness:
173 mg/L CaCO3
Test temperature:
22 ºC
pH:
7.4 to 9.4
Dissolved oxygen:
6.5 to 9.1 mg/L
Salinity:
Not reported
Nominal and measured concentrations:
Mean value of 1500 micrograms/L with a range of 1000 to 2200 micrograms/L.
Reference substance (positive control):
no

Results and discussion

Effect concentrations
Duration:
24 h
Dose descriptor:
LC50
Effect conc.:
ca. 1 500 µg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality
Remarks on result:
other: 1000-2200 micrograms/L

Applicant's summary and conclusion

Conclusions:
A 24-hour LC50 was reported in water fleas at a concentration of 1500 micrograms/L.