STANDARD 7


Elements Method Specifications Typical value
Total Zinc Calculation ≥ 98.5 % 99 %
Metalic Zinc Gas evolution ≥ 94.0 % 95-96 %
Pb AA (ISO3549) ≤ 0.1 % 0.03 %
Cb AA (ISO3549) ≤ 0.04 % 0.01 %
Fe AA (ISO3549) ≤ 0.005 % 0.001 %
Others AA (ISO3549) ≤ 0.001 % traces


    Specifications Typical value
Average particle size Fisher sub sieve sizer ASTM B330-07 6.0 - 9.0 7.5
Sauter Mean Diameter (*) Laser diffraction   7.5
Cut off diameter Laser diffraction   45
Sieve residue at 45 m Vacuum sieve ISO 3549 ≤ 0.5 % 0.30 %

(*) SMD or D(3,2) is the diameter of a particle having the same volume to surface area as the total volume to the total surface area of all particles.


      Indicative Values
Oil absorption Spatula rubout ASTM D281 6.8 %
BET N2 adsorption   0.2 m2/g
Bulk density Scott volumeter ASTM B329-06 3.1 g/cm3
Tamped density Engelsmann ISO R/787 4.2 g/cm3