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1006149 
Technical Report 
Ammonia 
Hazardous Substances Data Bank :: HSDB 
2012 
National Library of Medicine 
Washington, DC 
134 
English 
The data in this record are only for the non-ionic ammonia, NH3, a gas. When ammonia is in solution, it is in the form of the ammonium ion, NH4+. The data for the ammonium ion are found in the HSDB record HSN 5125, ammonium hydroxide, NH4OH. The literature is frequently inaccurate, using the term 'ammonia' for both forms. Since the physical and chemical properties are different for each form, the user is cautioned to be careful.