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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Apr 27- Apr 29, 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.2 (Acute Toxicity for Daphnia)
Deviations:
no
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
Potassium bromate
EC Number:
231-829-8
EC Name:
Potassium bromate
Cas Number:
7758-01-2
Molecular formula:
BrHO3.K
IUPAC Name:
potassium bromate
Test material form:
solid: crystalline

Sampling and analysis

Analytical monitoring:
yes
Details on sampling:
Samples were taken from all concentrations at the beginning of the study and after 48 hours.
After preparation of the test media the analytical values were determined.

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:
48 h

Test conditions

Hardness:
14 ° dH (about 250 mg/L CaCO3)
Test temperature:
21 – 22°C
pH:
7.9 +/- 0.3
Dissolved oxygen:
at least 90 %
Nominal and measured concentrations:
100.0 mg/L (nominal) = 99.5 mg/L (measured)
Reference substance (positive control):
yes

Results and discussion

Effect concentrations
Key result
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
> 100 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mobility

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
Under the given experimental conditions, the test material showed a 24 h and 48 h EC50 value > 100 mg/L nominally.
An aqueous solution of nominal 100 mg/L of potassium bromate revealed no aquatic toxicity in the test system.