Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Link to relevant study record(s)

biodegradation in water: screening test, other
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Reason / purpose for cross-reference:
read-across source
Key result
other: chemical oxygen demand (COD)
Remarks on result:
other: The chemical oxygen demand (COD) of the test substance was determined to be negligible (26E-03 g COD per g test substance).
Key result
0.03 other: g COD/g test. mat.

Description of key information

The chemical oxygen demand was not tested for disodium persulfate. A read across approach was applied for the test on oxygen demand with the category member diammonium persulfate, as this substance shows similar environmental fate properties. Diammonium persulfate was tested for Chemical Oxygen Demand in according to EU Guideline C.6. The chemical oxygen demand (COD) of a sample was determined to be negligible (26E-3 g COD per g test substance).

Key value for chemical safety assessment

Additional information

In a triplicate experiment, the chemical oxygen demand was determined to be negligible (26E-03 g COD/g diammonium persulfate) (individual values: 26E-03, 26 E-03 and 25 E-03 g COD/g diammonium persulfate, respectively). Upon contact with water or water vapour substances of the Persulfate Category hydrolyse into cation and persulfate anion. Hydrolysis is temperature and pH dependent and decomposition rates increase with decreasing pH value and increasing temperature. The persulfate anion, independent of the cation, undergoes further decomposition in normal water or acid conditions, readily oxidizing water to oxygen, producing sulphate and hydrogen ions. All persulfate decomposition products are ubiquitous to the environment. Hydrolysis is metal catalyzed, and rapid reaction with organic matter also is possible.