Product Description
Silica (White Carbon Black)
Silica, commonly known as white carbon black, is a crucial inorganic chemical product with a wide range of applications.
1. Chemical and Physical Properties
- Composition and Structure
- Chemically, silica is composed of silicon and oxygen, with the chemical formula SiO2. It exists in amorphous and crystalline forms. White carbon black is the amorphous variety. Its structure features a three - dimensional network of silicon - oxygen tetrahedra (SiO4), which gives it unique properties.
- Physical Appearance and Characteristics
- It typically appears as a fine, white, powdery substance. It has a high specific surface area, often ranging from 50 to 600 m²/g. This large surface area contributes to its excellent adsorption capabilities. It also has low bulk density, usually between 0.1 - 0.3 g/cm³, and high dispersibility in various media.
2. Production Methods
- Precipitated Method
- This is one of the most common production methods. It involves the reaction of water - glass (sodium silicate) with an acid, such as sulfuric acid or hydrochloric aci d. The chemical reaction can be represented as Na2SiO3 + H2SO4 → SiO2·nH2O↓ + Na2SO4. After precipitation, the resulting silica gel is processed through filtration, washing, drying, and pulverization to obtain white carbon black.
- Fumed Method
- In the fumed method, silicon tetrachlorid e (SiCl4) is vaporized and burned in a hydrogen - oxygen flame. The reaction is SiCl4 + 2H2 + O2 → SiO2 + 4HCl. The high - temperature combustion process leads to the formation of extremely fine silica particles with a very high purity and specific surface area.
Detailed Photos
Product Parameters
| Item |
Specifications |
Results |
| Property |
Specification |
Compliance Index |
| Appearance |
White powder |
- |
| Specific surface area of nitrogen adsorption (m²/g) |
200 ± 10 |
200 |
| SiO2-content |
> 99.8 |
99.90% |
| pH |
3.7-4.5 |
4.19 |
| Volatile matter % at 105 °C |
≤ 3.0 |
0.82 |
| Tamping density (g/dm³) |
30-60 |
31 |
| Sieve residue (45μm) (mg/kg) |
≤ 250 |
19.93 |
Application
- Rubber Industry
- White carbon black is widely used as a reinforcing filler in the rubber industry, especially in the production of tires. It can significantly improve the mechanical properties of rubber, such as tensile strength, tear strength, and abrasion resistance. In addition, it can enhance the wet - skid resistance of tires while reducing rolling resistance, which is beneficial for fuel efficiency and safety.
- Cosmetics and Personal Care
- Due to its good dispersibility and absorbent properties, it is used in cosmetics like powder foundations, blushes, and deodorants. It helps to improve the texture of products, prevent caking, and enhance the adhesion of pigments. In toothpaste, it serves as an abrasive agent to clean teeth gently.
- Paints and Coatings
- In the paints and coatings industry, silica acts as a thickening agent, anti - settling agent, and matting agent. It can improve the rheological properties of coatings, prevent pigment sedimentation during storage, and create a matte finish on painted surfaces, which is often desired for aesthetic and functional reasons.
- Agriculture
- It can be used as a carrier for pesticides and fertilizers. The high specific surface area of white carbon black allows it to adsorb active ingredients, facilitating slow - release and increasing the efficiency of agricultural chemicals. It also helps in improving the wettability and adhesion of pesticides on plant surfaces.
Packaging & Shipping
Packaging:
10kg/25kg/50kg bag--27tons/1FCL without pallet
1000kg bag--25tons/1FCL without pallet
Shipping:
We mainly use MSC, Maersk, CMA CGM, COSCO, HPL, ONE, YML, WHL, PIL and ZIM.
Certifications
Company Profile
Shandong Jiuchong Chemical Company Limited was founded in 2016, which is located in Weifang City, Shandong Province, China. We have 228 square meters of office space. Now Jiuchong chemical is a large modern international chemical enterprise with more than 28 series. Since our establishment, the company has gradually established and improved a sound supply chain system, quality monitoring system and service system, ensuring products quality and service.
At the same time, relying on our own geographical location and resource advantages, our company is committed to the optimization of a variety of chemical supply chain, including magnesium chloride, sodium metabisulfite, sodium bicarbonate, calcium chloride, magnesium sulfate, polyaluminium chloride, aluminium sulfate, industrial salt, soda ash etc.
Our products are sold well in 288 domestic cities and more than 36 foreign countries. Now the company has won the praise and trust of domestic and foreign customers. Based on stable quality and output, good team service and staff efforts, we will continue to develop domestic and foreign markets.
Jiuchong chemical takes "integrity, innovation and development" as the concept, puts integrity in the priority position in serving customers, and guarantees high quality products and satisfactory cooperation for customers experience. Your satisfaction is our driving force. Quality is the soul of enterprise and that is what we have always done. In the future, Shandong Jiuchong Chemical Company Limited hopes to build a brilliant tomorrow with you!
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