White Carbon Black: SiO2.nH2O

Items	Technical Index	Standard
Whiteness	Equal or Superior	HG/T3063-1999
SiO2 (%)	≥90	HG/T3062-1999
Loss on Heating(%)  105℃ 2h	3.0-8.0	HG/T3065-1999
Loss of Ignition  (Dried) 1000℃ 2h	3.0-6.0	HG/T3066-1999
pH Value	5.5-7.5	HG/T3067-1999
BET Specific Surface m2/g	145-260	HG/T3073-1999
DBP Oil-Absorption(cm3/g)	2.0-3.5	HG/T3072-1999
Total Iron Content(mg/kg)	＜500	HG/T3070-1999

Molecular Formular: SiO2.nH2O
Molecular Weight: 60.08

Properties: White amorphous superfine powder，Relative Density: 2.32-2.65，melting point: 1750℃, a low density, soluble in caustic soda and hydrofluoric acid,insoluble in other acids,water and solvent,high temperature resistant without combustion,a good water absorbability and electrical insulation.

Application:
1.HT199 - High transparence, High reinforcing, High abradability

It is mainly used in pharmaceuticals, foodstuffs, feed additive, pesticide, dry powder fire extinguishing agent and paintings, coatings, etc. Also applied in high-transparent rubber products and shoes soles.

2.HT299-1 - High reinforcing, High abradability

It is mainly used in meridian tyre, also applied in shoes soles, rubber pipe, rubber belt, solid tyre, bicycle tyre and multicolor tyre, ect.

3.HT299-2 - High reinforcing, High abradability

It is mainly used in tyre, also applied in half- transparent multicolor rubber shoes soles and products etc.

Package: 15 kg PP bag