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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Link to relevant study record(s)

Description of key information

Degradation by photolytic processes can be excluded.

Key value for chemical safety assessment

Additional information

There is no evidence for photodegradation of ammonium sulfate. However, ammonium sulfate may be formed in atmospheric aerosols (occurrence predominantly in the fraction < 2.5 µm) from reaction between ammonia and sulfuric acid (from SO2 emissions). SO2 concentrations control the ammonium sulfate formation (Scott and Cattell 1979; Gmur, Evans and Cunningham 1983).


Gmur, Evans LS, Cunningham EA (1983). Effects of ammonium sulphate aerosols on vegetation - II. Mode of entry and responses of vegetation. Atmospheric environment 17(4): 715-721

Scott WD and Cattell FCR (1979). Vapor Pressure of Ammonium|Sulfates. Atmospheric Environment 13, pp 307-317.

OECD (2007). SIDS Initial Assessment Report. Ammonium Sulfate, CAS Number: 7783-20-2.