Registration Dossier
Registration Dossier
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EC number: 269-142-0 | CAS number: 68188-14-7
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GPL guideline study without restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 021
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Resin acids and Rosin acids, barium salts
- EC Number:
- 269-142-0
- EC Name:
- Resin acids and Rosin acids, barium salts
- Cas Number:
- 68188-14-7
- Molecular formula:
- N/A
- IUPAC Name:
- Resin acids and Rosin acids, barium salts
- Test material form:
- solid
- Details on test material:
- Specific details on test material used for the study
SOURCE OF TEST MATERIAL
- Batch number of test material: EXP NR.3757-01
- Expiration date of the lot/batch: 31 Dec 2029
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: refrigerator
- Stability under storage conditions: The stability of the test substance under storage conditions is
guaranteed until 31 Dec 2029 as indicated by the sponsor, and the sponsor holds this responsibility.
- Stability under test conditions: no data
Constituent 1
- Specific details on test material used for the study:
- Test substance No.: 19/0421-1
Batch identification: EXP NR.3757-01
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION (especially for difficult test substances)
- Method: The test solutions were prepared separately for each test concentration, following general
guidance provided in OECD 23, as the test substance is a UVCB.
The test substance was weighed in and made up with test medium to reach the
nominal concentrations of 0, 4.8, 8.6, 15.4, 27.8 and 50 mg/L.
Undissolved test substance was removed by twofold filtration with a membrane filter
(pore size 0.2 μm).
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: water flea
- Source: The clone of Daphnia magna STRAUS 1820
used was supplied by the Institut National de Recherche Chimique Appliquée, France, in 1978. From this date on this clone was cultured and bred continuously in the Laboratory of Ecotoxicology of the Experimental Toxicology and Ecology of BASF SE in Ludwigshafen.
- Age at study initiation (mean and range, SD): < 24 hours (at least 3rd brood progeny)
Study design
- Test type:
- semi-static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 48 h
Test conditions
- Details on test conditions:
- TEST SYSTEM
- Test vessel: Glass beakers (nominal volume 100 mL)
- Type: open
- Material, size, headspace, fill volume: 50 mL
- Aeration: none
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates): 4
- No. of vessels per control (replicates): 4
OTHER TEST CONDITIONS
- Adjustment of pH: no
- Photoperiod: 16:8 light:dark
- Light intensity: - Reference substance (positive control):
- yes
- Remarks:
- potassium dichromate
Results and discussion
Effect concentrations
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 11.6 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Details on results:
- The measured concentrations (geometric mean) of the main constituent of the test substance in the test water were in a range of 40-64% of the nominal concentrations. This was most likely due to limited
solubility of the test substance in the test medium, and an additional decrease of the test substance over 72 h. Moreover, the test substance is a UVCB and as such every constituent contributes to a different degree to overall solubility, depending on its own individual solubility and its mass fraction in the test substance. Thus, for an evaluation of the results the nominal concentrations should be used and were considered to be an accurate representation of exposure levels throughout the experiment.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
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