Precipitated Barium Sulfate , Precipitated Barium Sulphate,BaSO4
Grade | First grade | Results | |
BaSO4 (dry base) % ≥ | 96.0 | 96.4 | |
Water solubles % ≤ | 0.3 | 0.22 | |
acetic acid content % ≤ | 0.6 | 0.29 | |
S content % ≤ | 0.003 | 0.0015 | |
volatile substance content % ≤ | 0.3 | 0.13 | |
residue on sieve (100°C) % ≤ | 0.2 | 0.012 | |
Particle size | ≤ 10um % | ≥ 80 | 98 |
≤5um % | ≥ 60 | 82.5 | |
≤ 2um % | ≥ 25 | 30 | |
PH value 100g/L solution | 6.5-9.0 | neutral | |
Oil absorption | 15-30 | 16.28 | |
Whiteness ≥ | 94 | 95.6 | |
Fe (Pb) content % ≤ | 0.004 | 0.001 |
Precipitated barium sulfate
Appearance and characters : white powder
Melting point :1580°C , becomes crystal when 1149°C , easy to go lump when it is dried.
Relative density :4.5 (15°C)
Solubility: insoluble in wait and acid. Only 0.0024g/100g in water , soluble in concentrated sulfuric acid but water , alcohol ,thin acid. Becomes lump when it is dried . No poison of industry precipitated barium sulfate itself , but maybe it is toxic of soluble Barium.
Character standard : GB/T2899-1996
Precipitated Barium Sulfate