Ammonium sulfate

CAS RN: 7783-20-2

Property Summary

Density Specific Gravity:
    1.77 g/cu cm

Melting Point:
    280 deg C (decomposes)

Molecular Formula:
    H8-N2-O4-S

Molecular Weight:
    132.140

PH:
    pH = 5.5 (0.1 M aqueous solution)

Solubilities:
    In water, 76.4 g/100 g water at 25 deg C
    In water: g ammonium sulfate/100 g saturated solution: 41.22 at 0 deg C; 43.47 at 25 deg C; 50.42 at 100 deg C
    In water (g/100 g H2O): 70.6 at 0 deg C; 76.7 at 25 deg C; 103.8 at 100 deg C
    Insoluble in acetone, ethanol
    Solubility decreases with addition of ammonia: at 10 deg C, from 73 g in 100 g of water, to 18 g in 100 g of 24.5% aqueous ammonia

Vapor Pressure:
    Vapor pressure of saturated solution: 0.901 kPa at 10 deg C; 1.319 kPa at 15 deg C; 1.871 kPa at 20 deg C; 2.573 kPa at 25 deg C; 3.439 kPa at 30 deg C; 4.474 kPa at 35 deg C

Find more information on this substance at: PubChem, PubMed