| Type |
Grade |
Iron
Content (Fe2O3 or Fe3O4)
(min %)¡¡ |
Water soluble salts
(max %) |
Matter
volatile at
105oC
(max %) |
Oil
absorption value
(max %) |
PH
value (range) |
Residue on Sieve of
mesh aperture (45¦Ìm)
(max %) |
Tinting strength
vs standard |
Colour Difference
vs standard |