Light pink 257M-5K200380 silica filler silica

257 light pink technical analysis project standard silica content% ≥93 94 result color (whiteness) 4.5-7.0 5.5% 94.1 Heating loss on ignition% ≤5.0 4.5 PH value 6.3 -7.0 6.8 DBP absorption value of the refractive index of 2.0-3.0 2.65 1.46 Total copper content mg ??/ g ≤5 2 total manganese content in mg / g ≤7 4 total iron content mg ??/ g ≤500 321 screening room was (45um)% ≤0.3 0.1 The specific surface area m2 / g 160-210 200 sodium content% ≤1.6 0.8 apparent specific gravity of 0.2-0.26 0.135 determining eligibility failed NOTE: D50 = 4.5um mesh to about 1000 mesh