Characteristics
Ammonium sulphate is a colourless salt that easily dissolves in water. During the dissolving process, a small amount of foam is produced. The molecular weight is 132,14 g/mole.

0 - 0,5mm   2%   0,5 - 1mm   60%   1 - 1,5mm   36%   > 1,5mm   2%

Storage
Ammonium sulphate should be stored dry. When stored for a long time, lumps may form.

Loose    ~ 1,04   Packed    ~ 1,13

(NH4)2SO4   > 99   %   Nitrogen, N   ~ 21   %   Sulphur, S   ~ 24   %    Free acid, H2SO4    ~ 0,05   %   Moisture   < 0,05   %   Mineral oil *)   ~ 4   ppm   Residue, insoluble in water   ~ 100   ppm   Glowing residue (800°C)   ~ 100   ppm   Arsenic, As   < 0,02   ppm   Lead, Pb   < 6   ppm   Cadmium, Cd   < 0,01   ppm   Mercury, Hg   < 0,04   ppm   Iron, Fe   < 10   ppm   Zinc, Zn   < 2,5   ppm   Copper, Cu   < 0,1   ppm   Chromium, Cr   < 2   ppm   Nickel, Ni   < 0,2   ppm   Vanadium, V   < 0,4   ppm   Selenium, Se   < 0,01   ppm   Calcium, Ca   < 55   ppm   Carbon, C   < 0,2   ppm   Phosphate, (PO43-)   < 5   ppm   Nitrate ,(NO3-)   <0,04   ppm   Chloride, (Cl-)   <0,04   ppm            *) Hydraulic oil as Swedish standard SH46.

General information
Moist ammonium sulphate and ammonium sulphate solutions react slightly acidic. In presence of material that give an alkaline reaction, ammonia will form. Many metals, e.g. iron and zinc, are affected by ammonium sulphate in combination with moisture. Aluminium and stainless steel are inert in the reaction with ammonium sulphate.

Dissoluble ammount(NH4)2SO4 in water

0   701   512   41,3%   10   727   523,5   42,1%   20   754   535   43,0%   30   782   546   43,9%   40   812   558   44,8%   50   843   571   45,7%   60   874   582   46,6%   70   907   593,5   47,6%   80   941   605   48,5%   90   978   617   49,4%   100   1017   629   50,4%

Density at 20ºC

1%   10   1004   kg/m3   2%   20   1010   kg/m3   4%   41   1022   kg/m3   6%   62   1034   kg/m3   8%   84   1045   kg/m3   10%   106   1057   kg/m3   15%   163   1088   kg/m3   20%   223   1115   kg/m3   25%   286   1144   kg/m3   30%   352   1172   kg/m3   35%   420   1200   kg/m3   40%   491   1228   kg/m3