Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 271-685-3 | CAS number: 68604-33-1 This substance is identified by SDA Substance Name: C14-C18 and C16-C18 unsaturated alkyl carboxylic acid ammonium salt and SDA Reporting Number: 04-006-01.
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- Read-across (analogue): For justification of read-across see section 13.2.
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across: supporting information
- Key result
- Duration:
- 24 h
- Dose descriptor:
- EC50
- Effect conc.:
- >= 4.2 - <= 40 mg/L
- Nominal / measured:
- not specified
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- >= 19 mg/L
- Nominal / measured:
- not specified
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Conclusions:
- Based on read across studies for Short-term toxicity to aquatic invertebrates on chemically similar substances the EC50(daphnia, 48h/24h) for the target substance Fatty acids, C14-18 and C16-18-unsatd., ammonium salts is estimated to be >=4.2 mg/l (to <= 40 mg/l).
Reference
Description of key information
Based on read across studies for short-term toxicity to aquatic invertebrates on chemically similar substances, for the target substance Fatty acids, C14-18 and C16-18-unsatd., ammonium salts the EC50(daphnia, 48h/24h) is estimated to be >=4.2 mg/l (to <= 40 mg/l).
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 4.2 mg/L
Additional information
Several publications are available in which the short-term toxicity to aquatic invertebrates of the analogue substances (Sodium oleate, Sodium myristate, Sodium stearate, Sodium palm kernel soap, Sodium tallow soap) were determined. The test took 24 hours respectively 48 hours. As results, following (lowest) EC50 values were determined: 4.2 mg/L for Sodium oleate, >20 mg/L for Sodium myristate, 19 mg/L for Sodium stearate, 25 mg/L for Sodium palm kernel soap and 40 mg/L for Sodium tallow soap.
Based on the structural similarity of the target substance to the analogue substances the results of the short-term toxicity to aquatic invertebrates of the source substances can be assigned to the target substance.
The supporting information of the short-term toxicity to aquatic invertebrates of the analogue substances sodium laurate (EC50(daphnia, 24h): 48 mg/l) is given but is less appropriated for the read-across projection to short-term toxicity to aquatic invertebrates of the target substance (because laurate is an impurity).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
