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EC number: 291-905-1 | CAS number: 90506-43-7
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- REPORTING FORMAT FOR THE ANALOGUE APPROACH
Refer to attached document - Reason / purpose for cross-reference:
- read-across source
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- other: water-accomodated fraction (WAF)
- Basis for effect:
- growth rate
- Key result
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- other: water-accomodated fraction (WAF)
- Basis for effect:
- growth rate
- Validity criteria fulfilled:
- yes
- Conclusions:
- Available data from 1-Octadecanol, phosphate, potassium salt were used to evaluate toxicity to algae for Phosphoric acid, C12-18-alkyl esters, potassium salts.
The toxicity of the read-across substance 1-Octadecanol, phosphate, potassium salt on the growth of the fresh water green alga Desmodesmus subspicatus was tested in a study according to OECD guideline 201.
No significant effects were observed up to and including the highest test concentration (WAF of 100 mg/L 1-Octadecanol, phosphate, potassium salt).
Growth rate:
72h-EC50: > 100 mg/L (nominal, WAF)
72h-NOEC:≥100 mg/L (nominal, WAF)
Yield:
72h-EC50: > 100 mg/L (nominal, WAF)
72h-NOEC:≥100 mg/L (nominal, WAF)
Reference
Description of key information
An 72h-EC50 of > 100 mg/L (grow, nominal, WAF) and a 72h-NOEC of ≥100 mg/L (grow, nominal, WAF) for toxicity to fresh water green alga Desmodesmus subspicatus were determined based on on read-across information for Phosphoric acid, C12-18 alkyl esters, potassium salts.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 100 mg/L
- EC10 or NOEC for freshwater algae:
- 100 mg/L
Additional information
Available data from 1-Octadecanol, phosphate, potassium salt were used to evaluate toxicity to algae for Phosphoric acid, C12-18-alkyl esters, potassium salts.
The toxicity of the read-across substance 1-Octadecanol, phosphate, potassium salt on the growth of the fresh water green alga Desmodesmus subspicatus was tested in a study according to OECD guideline 201.
No significant effects were observed up to and including the highest test concentration (WAF of 100 mg/L 1-Octadecanol, phosphate, potassium salt).
Growth rate:
72h-EC50: > 100 mg/L (nominal, WAF)
72h-NOEC:≥100 mg/L (nominal, WAF)
Yield:
72h-EC50: > 100 mg/L (nominal, WAF)
72h-NOEC:≥100 mg/L (nominal, WAF)
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