High Whiteness Crystalline Silica Micro Powder

• Customization: Available
• Certification: ISO
• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass
• Grain Fineness Distribution: D50(0.5μm-25μm)
• Moh′s Hardness: 7
• Exterior: White Powder
• Pyroconductivity: 12.6W/K.M
• Refraction Coefficient: 1.54
• Transport Package: Paper Bag, Big Bag, Pallet
• Specification: SiO2>99%
• Trademark: ST
• Origin: Lianyungang, China
• HS Code: 2811229000
• Production Capacity: 50000pieces/Year

Product Description

Product Overview

 

High Whiteness Crystalline Silica Micro Powder is a high-purity, ultra-fine powder material, refined from premium natural quartz through specialized processes. It features high purity (≥99%), excellent whiteness, uniform particle size distribution (adjustable D50 0.5μm-25μm), and strong chemical stability. Widely used in electronic encapsulation, coatings, ceramics, rubber, plastics, adhesives, and other fields, it significantly enhances mechanical properties, insulation, and weather resistance.

 

Product Specifications

Parameter	Specification
Chemical Purity (SiO2)	≥99%
Whiteness	≥92%
Particle Size (D50)	0.5μm-25μm (customizable)
Moisture	≤0.5%
Loss on Ignition	≤0.5%
Density	2.65 g/cm³
Mohs Hardness	7
Crystal Form	Crystalline

 

 

Item	Unit	Typical Values
Exterior	/	white powder
Density	kg/m³	2.65 ×10^3
Moh's hardness	/	7
Coefficient of linear expansion	1/k	14×10^-6
Pyroconductivity	w/k.m	12.6
Refraction coefficient	/	1.54

Key Features

 

 High Purity: SiO₂ content ≥99%, with extremely low impurities, ensuring stable performance in high-end applications.
 Adjustable Fineness: D50 particle size adjustable from 0.5μm to 25μm, meeting precise requirements across industries.
 Superior Whiteness: Whiteness ≥92%, ideal for high-end coatings, plastics, and other color-sensitive applications.
 Chemical Inertness: Resistant to acids, alkalis, and oxidation, with excellent insulation properties, suitable for electronic encapsulation and high-temperature environments.
 Performance Enhancement: As a functional filler, it improves material strength, wear resistance, and weather resistance.

 

Applications

 

 Electronics: IC packaging, epoxy resin potting compounds, copper-clad laminates, enhancing insulation and thermal conductivity.
 Coatings: High-end paints, anti-corrosion coatings, powder coatings, improving scratch resistance and dispersibility.
 Ceramics: Precision ceramics, glazes, increasing sintering density and surface smoothness.
 Rubber/Plastics: Reinforcing filler to enhance tensile strength, heat resistance, and dimensional stability.
 Adhesives: Improves bonding strength and aging resistance.

 

Packaging & Storage

 

• Packaging: 25 kg/bag (plastic-lined woven bag) or customized per customer requirements.

• Storage: Store in a cool, dry place; protect from moisture, damage, and contact with strong acids/alkalis.

 

Why Choose Us?

 

 Strict QC: Batch testing ensures compliance with particle size, purity, and whiteness standards.
 Technical Support: Customized application solutions and expert consultation.
 Flexible Supply: Tailored particle size and packaging options with fast delivery.
 

Contact us today! As a certified premium supplier on Made-in-China.com, we provide cost-effective silica micro powder solutions!

Company Information:

Jiangsu Shengtian New Materials Co., Ltd. has a technical research and development team focusing on ultra-fine powder materials, and has strong strength in the research and development and production of ultra-fine functional materials, composite materials and related applications, and has become a more influential high-tech enterprise in the ultra-fine functional powder industry.
The company's products include crystalline silicon powder, molten silicon powder, soft composite silicon powder, spherical silicon powder, aluminum oxide powder, ceramic powder, glass powder and other ten categories, nearly 100 kinds of different specifications of products, and has a strong modification, compounding and other follow-up deep processing technology and capabilities. The products are processed by special technology, the production technology is leading and innovative, and the introduction of international technical standards for similar products, widely used in electronic packaging, copper clad plate, ink coating, adhesive, ceramics, precision casting, glass fiber, plastic rubber and other industries, giving its functionality while helping customers reduce costs. And provide the overall application of technology solutions.
The company has more than 20 different types of production lines, more than 100 sets of domestic advanced equipment, with an annual output of 50,000 tons. The company adopts professional production and testing equipment and formulates strict production quality control system to conduct all-round control of product quality. All products of the company have passed SGS environmental protection testing, in line with the EU ROHS green environmental protection standards. The company took the lead in the silicon powder industry through the ISO9001 quality management system certification and ISO14001 environmental management system certification, has passed the high-tech product identification. The company's products and solutions have been applied to more than 160 enterprises around the world, including more than 80 customers with stable cooperation for more than 10 years.

Workshop:
 

An excellent manufacturing enterprise

The company has 20 patents, the company has passed ISO9001 and ISO14001 certification, and has been recognized as a national high-tech enterprise