Registration Dossier
Registration Dossier
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EC number: 612-381-6 | CAS number: 61789-91-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Freshwater Alga and Cyanobacteria, Growth Inhibition Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- no defined IUPAC name
- EC Number:
- 612-381-6
- Cas Number:
- 61789-91-1
- Molecular formula:
- no molecular structure defined
- IUPAC Name:
- no defined IUPAC name
- Test material form:
- semi-solid (amorphous): gel
- Details on test material:
- Components Floraesters 30
Wax Ester ---
36:2 <2
38:0 <1
38:1 2 - 4
38:2 2 - 4
40:0 2 - 4
40:1 14 - 18
40:2 17 - 21
42:0 2 - 4
42:1 14 - 18
42:2 17 - 21
44:0 <2
44:1 4 - 7
44:2 4 - 7
46:2 <3
Iodine Value** 57 - 61
Mono-ester content*** 40 - 47
Constituent 1
Results and discussion
Effect concentrations
- Duration:
- 72 h
- Dose descriptor:
- IC50
- Effect conc.:
- 359 other: ppm
- Nominal / measured:
- not specified
- Conc. based on:
- not specified
- Basis for effect:
- growth rate
Applicant's summary and conclusion
- Conclusions:
- OECD 201 Algal Growth inhibition was determined for the test substance based on a formulation of the test substance into a base (vehicle). The IC50 for both the base and the test substance formulation were determined for a concentration range of 0.31% to 5% base formulation. The test result graphs show the independent determinations for the base formulation alone and with the addition of 10% test substance. Non-linear regression and curve fit was applied to determine the IC50. For the base formulation the IC60 was 4460 ppm. For the finished formulation containing 10% test substance, the IC50 was determined to be 359 ppm for the concentration of test substance.
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