Registration Dossier
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EC number: 215-724-4 | CAS number: 1390-65-4
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2019
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Freshwater Alga and Cyanobacteria, Growth Inhibition Test)
- GLP compliance:
- yes
- Specific details on test material used for the study:
- Name CARMINE LAKE
Batch no. HPFC16006A
Appearance: fine red powder
Composition: Hydrated aluminium chelate of carminic acid (7-beta-Dglucopyranosyl-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxoanthracene-2-carboxylic acid)
CAS No. 1390-65-4
EC-No. 217-724-4
Molecular formula: C22H20O13
Molecular weight: 492.39 g/mol
Vapour pressure: unknown
Stability in solvents: H2O: not stated; EtOH: not stated; Acetone: not stated; CH3CN: not stated; DMSO: not stated
Solubility in solvents: Soluble in alkaline water (pH >9.5); H2O: unknown; EtOH: unknown; Acetone: unknown; CH3CN: unknown; DMSO:unknown
Storage Room Temperature (20 ± 5 °C); Keep away from light - Analytical monitoring:
- yes
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
- Test type:
- static
- Water media type:
- brackish water
- Total exposure duration:
- 72 h
- Test temperature:
- 21.0 – 24.0 °C
- pH:
- 7.6-8.1
- Nominal and measured concentrations:
- 4.6 / 10 / 22 / 46 / 100 mg/L (nominal)
- Reference substance (positive control):
- yes
- Remarks:
- Potassium dichromate (K2Cr2O7, CAS No. 7778-50-9)
- Key result
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Remarks:
- growth rate and yield
- Effect conc.:
- ca. 2.6 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Key result
- Duration:
- 72 h
- Dose descriptor:
- LOEC
- Remarks:
- Growth rate and yield
- Effect conc.:
- ca. 3.9 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- ca. 7.5 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: yield
Reference
Description of key information
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 7.5 mg/L
- EC10 or NOEC for freshwater algae:
- 2.6 mg/L
Additional information
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