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Specification Item White powder Appearance 166.1 Molecular Weight 674±2mg KOH Acidity ≤ 25ppm 4-CBA ≤15ppm DUST Content ≤ 10ppm Total Metal Content ( Mo- Cr-Ni-Ti-Mg-Co ) ≤2ppm Fe Content ≤ 0.5 wt% Humidity ≤ 170 ppm P-T.Acid ≤ 10 APHA 5% DMF solution color ≤ 6% Residue on 250 Mesh screen 15 -36 % Quantity passing 44 Mesh screen
