Characteristics

Standard

Method of test

Zinc  as Zn  %

  50.5-52.0

ISO6745:1990(E) clause8

Phosphate as PO₄^3-  %

47.0-49.0

ISO6745:1990(E) clause 9

Loss on ignition 600℃ %

8.5-10

ISO6745:1990(E) clause7

Resistance of the aqueous extract Ω.m min

65

ISO787-14

PH value

6.0-8.0

ISO787-9

Residue on sieve 45microns % max

 0.05

ISO787-7

Oil absorption g/100g max

24

ISO787-5

Lead as pb   ppm max

10

ICP

Cadmium as cd  ppm max

10

          ICP

Matter soluble in water % max

1.0

ISO787-3

Water Soluble Chloride % max

0.025

ISO787-13

Water Soluble Sulphate % max

0.05

ISO787-13

Density  g/cm³

3.0-3.6

ISO787-10