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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-781-8 | CAS number: 7727-21-1
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 based on grouping of substances (category approach)
- Adequacy of study:
- key study
- Justification for type of information:
- READ ACROSS CATEGORY APPROACH
A category group was formed with dipotassium peroxodisulphate (KPS), disodium peroxodisulphate (SPS) and diammonium peroxodisulphate (APS). Several physico-chemical, fate, ecotoxicological and toxicological endpoints were assessed using the category approach. Please refer to the read across justification in chapter 13 for further information. - Reason / purpose for cross-reference:
- read-across source
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 136 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: cell growth inhibition (EbC50: 0-72 h)
- Remarks on result:
- other: 95 % confidence interval: 63 - 281 mg/L
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 320 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: growth rate reduction (ErC50: 0-72 h)
- Key result
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 32 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: cell growth inhibition and growth rate reduction
Reference
Description of key information
The acute toxicity of the Persulfate Category to aquatic algae was tested in four studies. One study was available for disodium persulfate and three for diammonium persulfate. The studies were in accordance to OECD guideline 201 and EU Method C.3. The most sensitive EC50 (72 h) value for marine water was 320 mg/L with a NOEC of 32 mg/L.
Key value for chemical safety assessment
- EC50 for marine water algae:
- 320 mg/L
- EC10 or NOEC for marine water algae:
- 32 mg/L
Additional information
The acute toxicity of the Persulfate Category to aquatic algae was tested in three studies. One study was available for disodium persulfate and three for diammonium persulfate. The marine algal growth inhibition test with diammonium persulfate revealed an EC50 (72 h) of 320 mg/L, the most sensitive value available.
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.
