Registration Dossier
Registration Dossier
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EC number: 231-984-1 | CAS number: 7783-20-2
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
not applicable
The dissociation constant of anhydrous ammonia was measured to be 9.25 at 25 °C.
Key value for chemical safety assessment
Additional information
The substance is a salt which is a reaction product of acid and base that retain their ionic character.
In addition, the dissociation constant on the single compound (base) has been measured.
The representative compound for ammonium sulphate is referred to ammonia anhydrous with CAS number 7664-41-7.
1) Ammonia, anhydrous:
measured pKa= 9.25 at 25°C (CRC Handbook, 2006)
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