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Qingdao Jingtai Huacheng International Trade Co., Ltd.

Precipitated Silicon Dioxide, Silicon Dioxide, Precipitated Silica for Food Additive manufacturer / supplier in China, offering Food Grade Additive Precipitated Silicon Dioxide, PVDF Aluminium Composite Panel for Exterior Cladding, Best Quality Perforated Aluminum Composite Panels and so on.

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Food Grade Additive Precipitated Silicon Dioxide

FOB Price: Get Latest Price
Min. Order: 1 Ton
Port: Qingdao, China
Production Capacity: 5000mt/Month
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: H30
  • Usage: Food
  • Quality: First Class
  • Delivery Time: 15 Working Days After Placing Order
  • Transport Package: 10kg/Bag, Paper Bag, Outside with PE Liner
  • Origin: Shandong Province, China
  • Appearance: Powder
  • Color: White
  • Application: Food
  • Trademark: Zhong Hai
  • Specification: Sio2 Content more than 99%
  • HS Code: 2811220000
Product Description
Food Grade Additive Precipitated Silicon Dioxide

1. 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.

2. Specifications of precipitated silicon dioxide
FormWhite powderwhite powder
Sio2 content(dry basis) %≥99.9≥99.9
PH Value6.5-7.56.5-7.5
BET surface area m²/g220-260240-280
DBP absorption value ml/100g280-320320-360
Average particle size um3-73-7
Sieve residue(45um)%<0.05<0.05
Ignition loss(105C° for 2hr.) %2.0-3.02.0-3.0
Heating loss(1000C° for 2hr.)%3.0-4.03.0-4.0
Soluble salt(Na2 SO4)%≤0.02≤0.02
Iron content %≤0.0015≤0.0015
lead content %≤0.0001≤0.0001
Nacl content %≤0.01≤0.01
Heavy Metal content %≤0.001≤0.001
Arsenic Content %≤0.00001≤0.0001

3. Pictures for Products, Packing and Transportation

Food Grade Additive Precipitated Silicon Dioxide
Food Grade Additive Precipitated Silicon DioxideFood Grade Additive Precipitated Silicon Dioxide
Food Grade Additive Precipitated Silicon Dioxide

4. Package and Delivery

                                                                        PACKAGE & DELIVERY
Package10KG/BAG, Paper Bag, Outside with PE Liner or as the clients' requirements.
DeliveryPrompt shipment or Within 15 days after signing the contract.
StorageThe precipitated silica should be stored in the dry and cooling place with good ventilation, avoiding exposure of the packaged product to direct sunlight.

5. FAQ
Q:Can we replace the package?
A:Of course. The package can be custom-made. You can provide the pattern or we design for you.
Q:What's the date of delivery?
A:The delivery time is changeable.In stock, the delivery time is short. Products can be sent out in 5 working days. For large quantity, the delivery date is under requirements of contract.
Q:How to deal with specification differences?
A:Please contact us for help. We will communicate with technicians to see if there's a possibility to OEM for you.
Q:How long will I get replies?
A:Due to time difference and holidays, we will try our best to reply you in 24 working hours. If there is anything we can do to help, please feel free to contact us at any time.
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Mr. Martin
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