Description

Silica (White carbon black) Molecular formula: SiO2•nH2O Molecule Weight: CAS Noï&frac*4;š*********9 EINECS: ********4 Appearance: White granular powder Purity: *5%**8% Specification: 1) Optimal flatting efficiency, precisely controlled process ensuring pore volume 1.8ml/g for consistent performance 2) Easy adding: in the production of the coatings, it can be easily added in any process 3) High film clarity: extremely high purity (*9% SiO2 and above), refractive index 1.*6 comparable to that of most resins. It makes silica invisible in polymer films and clear lacquers 4) Optimal suspension: no hard sedimentation through long time reserving since it is treated by organic 5) Well dispersed: easily dispersed in any coatings, only require the common high sped stirs by approximate line-velocity 5m/s, and stirring *5 - *0 minutes, typical hegman value *5 - *5Î&frac*4;m Item Model : HL***0 Model : HL***0 Specific Surface Area(m2/g) **0±*5 **0±*5 Suspension in Water PH (4%) 3.6~4.5 3.6~4.5 Loss after Drying **5°c (m/m%) ≤1.5 ≤1.5 On Ignition ***0°c (m/m%) ≤2.5 ≤2.5 Residue on Sieve *5Î&frac*4;m (m/m%) ≤0.*5 ≤0.*5 Apparent Density (g/l) *5~*0 *5~*0 SiO2 (m/m%) ≥*9.8 ≥*9.8 Carbon (m/m%) ≤0.2 ≤0.2 Fe2O3 (m/m%) ≤0.**3 ≤0.**3 Al2O3 (m/m %) ≤0.*5 ≤0.*5 Titanium Trioxide (m/m %) ≤0.*3 ≤0.*3 Main uses: good transparent rubber product, shoe-making material, additive of plastic and polyester, cover of cable and electric wire, strengthening agent of light colord rubber, carrier of forage additive, pigment additive. Packing: Packed in plastic woven bag of *5kg/**0kg /***0kg net each , or as per the buyer\&#**9;s requirement .