Factory Price CAS 7631-86-9 White Carbon Black Silicon Dioxide Sio2

• Customization: Available
• CAS No.: 7631-86-9
• Formula: Sio2
• Model NO.: JC-SiO2-01
• EINECS: 231-545-4
• Classification: Silicon Dioxide
• Grade Standard: Industrial Grade
• Kind: Acidic Oxide
• Quality: Special Class
• pH: 3.7-4.5
• Melting Point: >1600°c
• Sieve Residue(45um)(Mg/Kg): ≤250
• Appearance: White Powder
• Tamping Density(G/Dm³): 30-60
• Solubility: Difficult
• Expiration Date: 2 Years
• Bag Marks: Customizable
• Sample: Free
• MOQ: 25tons
• Transport Package: PP Bag
• Specification: 25kg/50kg/1000kg
• Trademark: N/M
• Origin: China
• HS Code: 28112290
• Production Capacity: 20000tons/Month

Product Description

Product Description

Silicon dioxide, with the chemical formula SiO₂, is a prevalent and versatile compound. It commonly exists in nature in various forms, including crystalline (such as quartz) and amorphous states. In its pure form, it is often colorless and transparent, presenting as a solid. Characterized by a high melting point, it exhibits low solubility in water and most common solvents. Its chemical structure consists of silicon atoms covalently bonded to oxygen atoms, forming a stable three-dimensional network.

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

 

1. Glass and Ceramics
Industrial-grade silica is fundamental in glass manufacturing. It gives glass its transparency, hardness, and heat-resistance. In ceramics, it enhances strength and dimensional stability during firing.
2. Semiconductor and Electronics
High-purity silica is used to create silicon wafers for semiconductors. It also insulates and protects electronic components due to its excellent electrical properties.
3. Construction
In construction, silica in the form of sand is a key ingredient in concrete and mortar. It increases the strength and durability of these building materials.
4. Refractory Materials
Silica is used to make refractory bricks and linings. These can withstand high temperatures in furnaces and kilns, ensuring efficient industrial processes.
5. Filler in Plastics and Rubbers
As a filler, industrial-grade silica improves the mechanical properties of plastics and rubbers. It enhances strength, stiffness, and abrasion resistance.

 

 

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!

FAQ