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Synthetic Precipitated Silicon Dioxide EINECS No. 231 545 4 White Carbon Black
Synthetic Precipitated Silicon Dioxide EINECS No. 231 545 4 White Carbon Black
Specifications
Model Number :
HF205
Certification :
SGS/ASTM/ROHS
Place of Origin :
China
MOQ :
Negotiable
Price :
Negotiable
Payment Terms :
L/C, D/A, D/P, T/T
Supply Ability :
1000 Ton Per Month
Delivery Time :
7-10 Work Days
Packaging Details :
10 KGS/Bag
Brand Name :
SKYHIL
Material :
Silicon Dioxide
Standard :
Industrial Use
Other Name :
White Carbon Black
Appearance :
White and Colloidal Powder
Molecular Formula :
Sio2
CAS No :
7631-86-9
EINECS No :
231-545-4
HS Code :
281122
Description

Synthetic Amorphous Precipitated Silicon Dioxide Used For Tires

Brief Intruction for precipitated silica

Precipitated silica, a form of synthetic amorphous silicon dioxide, is derived from quartz sand, a crystalline form of silicon dioxide. The physical properties of precipitated silica can be manipulated during the manufacturing process to deliver products with a wide range of performance-enhancing features engineered for many different end-use applications.

Here is a brief look at how precipitated silica is made:

Step 1: Precipitation

Sodium silicate solution (water glass) and mineral acid are reacted in an agitated vessel to produce a slurry of amorphous silica particles. The critical physical properties of precipitated silica, such as particle size and porosity, are controlled during this stage of the process by manipulating, among other things, the composition, concentration, and ratio of reactants in the precipitating solution; the speed of agitation; the reaction time; and the reaction temperature.

Step 2: Washing

The precipitated silica slurry is then concentrated to form a filter cake. The product filter cake is washed to remove the salt byproduct that is produced during precipitation.

Step 3: Drying

The silica filter cake is then dried to the desired final product moisture content.

Step 4: Finishing and packaging

The dried silica is then finished to achieve the desired final product form. This can include: agglomeration or compaction into a low-dust form, or milling and classification to the required particle size distribution. The final product is packaged for shipment in small bags, big bags, or bulk trucks or railcars.


Specifications of precipitated silica

Tires -HF Series

Product Series Tire Grade
Type HF105 HF115 HF125 HF135 HF145
Physical Form powder mirco pearl granular
BET m2/g 110-140 140-170 125-150 155-180 190-230
Silica(dry basis) % ≥90 ≥93
Drying Loss % 4.0~8.0
Ignition Loss (dry basis) % ≤7.0
pH(10% aqueous solution) 6.0~7.5
DBP cm3/g 2.0~3.0
Sieve Residue 45um % ≤0.5
Cu mg/kg ≤30
Mn mg/kg ≤50
Fe mg/kg ≤500
Soluble Salts (As Na2SO4) % ≤1.5

Synthetic Precipitated Silicon Dioxide EINECS No. 231 545 4 White Carbon Black

Product tags

precipitated silicon dioxide

,

silicon dioxide chemical formula

,

refractory al2o3 sio2
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Synthetic Precipitated Silicon Dioxide EINECS No. 231 545 4 White Carbon Black

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Product Detail
Model Number :
HF205
Certification :
SGS/ASTM/ROHS
Place of Origin :
China
MOQ :
Negotiable
Price :
Negotiable
Payment Terms :
L/C, D/A, D/P, T/T
Contact Supplier
Synthetic Precipitated Silicon Dioxide EINECS No. 231 545 4 White Carbon Black

Guangzhou Quanxu Technology Co.,Ltd.

Active Member
8 Years
guangdong
Since 1995
Business Type :
Manufacturer, Agent, Importer, Exporter
Main Products :
Paint Matting Agent, Silica Matting Agent, Fumed Silica Powder
Total Annual :
1000000-2000000
Employee Number :
>200
Certification Level :
Active Member
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