White carbon black
   
White carbon black

Chemical name: Silica, precipitated, hydrated;
Molecular formula: SiO2 · nH2O;
Appearance: white granules or powder
Use:

  • Used for [medicine, feedstuff]: Silica for medicine use is white granular powder with high purity, high fluidity, water absorption and flowage promotion, mainly used as auxiliary medicine materials and feedstuff additive.
  • Used for [silicon rubber]: For its special physical and chemical properties, it is the best transparent reinforcement additive in rubber-based blends. It can greatly improve the aging resistance, resilience and compressive deformation resistance of silicon rubber.
  • Used for [tyres]: If used in thread, it can greatly reduce the rolling resistance f tyres, and strengthen the holding power of types on wet or icy ground.
  • Used for [soles]: It is reinforcing filler for rubber soles with high reinforcing effect as that of carbon black, and it can make rubber products with light color or transmissivity.
  • Used for [food]: It is white fine powder with high purity, high fluidity and large specific surface area, mainly used as food anti-caking agent, antioxidant, thickener, coagulant, suspending agent, carrier of aromatical chemicals and active components, quality improver and oil absorber, etc.
Type / Technical index FengSil-I FengSil- II FengSil- III FengSil- IV FengSil- V
SiO2 % ≥ 93 ≥ 93 ≥ 92 ≥ 92 ≥ 98
Loss on heating % 4.0-6.0 4.0-8.0 4.0-8.0 4.0-8.0 4.0-8.0
Loss on ignition % &le: 7.0 &le: 7.0 &le: 7.0 &le: 7.0 &le: 7.0
PH value 6.0 -7.0 6.5 -7.0 6.0 -7.0 6.0 -7.0 6.0 -7.0
Specific surface area cm2/g 190 -210 170 -190 150 -170 170 -190 230 -250
DBP absorption value cm3/g 1.8 -3.0 2.0 -3.0 2.0 -3.0 2.0 -3.0 3.0 -4.0
Iron mg/Kg &le: 300 &le: 200 &le: 300 &le: 300 &le: 300
Sulfate % &le: 1.0 &le: 0.5 &le: 0.8 &le: 1.5 &le: 0.5
 
Inspection Report on Heavy Metals
       
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