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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Due to the salt-character of ammonium sulphate, potassium sulfate and sodium sulphate, the calculation of a fugacity model is not appropriate. The ionic nature and high water solubility of the substances indicate a high mobility in soils. Thus water is expected to be the main target compartment of the substances. However, depending on the physico-chemical properties of the soil ion-ion interactions may occur. Particularly ammonium is known to bind to negatively charged soil particles such as clay. Though, ammonium is not expected to be persistent in soil. In the environment the ion will be rapidly oxidised to nitrate by nitrifying bacteria that are ubiquitous in natural soil and in water. The negatively charged nitrate ion is mobile in soils. Since ammonium sulphate, potassium sulfate and sodium sulphate are inorganic salts the vapour pressure is expected to be negligible and therefore there will be no transfer to or via the atmosphere.



OECD (2005). SIDS Initial Assessment Report. Sodium sulfate, CAS No 7757-82-6. UNEP publications.

OECD (2007a). SIDS Initial Assessment Report. Ammonium sulfate, CAS No 7783-20-2. UNEP publications.

OECD (2007b). SIDS Initial Assessment Report. Potassium Sulfate, CAS No 7778-80-5. UNEP publications.