Description Ammonium sulfate (American English; ammonium tetraoxosulfate (VI) is the IUPAC-recommended spelling; and ammonium sulphate in British English), (NH4)2SO4, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. It contains 21% nitrogen and 24% sulfur. Basic Info Chemical Name ammonium sulfate Synonyms Ammonium sulfate; CAS No. 7783-20-2 Molecular Formula H5NO4S Molecular Weight 115.10900 PSA 86.22000 LogP 0.75190 Properties Appearance & Physical State White crystalline powder Density 1.76 Boiling Point 330ºC at 760 mmHg Melting Point 280ºC Refractive Index n20/D 1.396 Stability Stable. Contact with strong oxidizers may cause fire or explosion. Incompatible with strong bases. Storage Condition 2-8ºC |