Content of Antimony (Sb) as % : 40-42 Toluene % max : 0.2 Iron (Fe) ppm max : 10 Lead (Pb) ppm max: 20 Arsenic (As) ppm max : 20 Chloride(Cl) ppm max : 10 Sulfide (SO4) ppm max : 10 Nickel (Ni) ppm max : 10 Solubility at 20 in E.G. : (min. 4.8% soluble in E.G.): Clear solution