Model: Iron oxide red 190
Fe2O3 content:≥95%(m/m)
Matter volatile at 105 degree : ≤0.8%(m/m)
Soluble matter in water:≤ 0.3%(m/m)
Residue after sifting (45 um meshes):≤0.5%
PH in extract water : 5-7
Cao content: ≤0.3%(m/m)
Oil absorption.....
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[中国]