Key Features
Optical-grade purity (99%+)
Precise particle size control
Refractive index: 1.54-1.55
Ultra-low metal impurities
Technical Specifications
| Parameter |
Specification |
| Purity |
≥99% (tested 99.3%-99.8%) |
| Particle Size (D50) |
0.5μm-25μm (customizable) |
| Refractive Index |
1.54-1.55 (589nm) |
| Density |
2.65 g/cm³ |
| Mohs Hardness |
7 |
| Whiteness |
≥90% |
| Moisture Content |
≤0.2% |
| Metal Impurities |
Fe≤50ppm, Al≤30ppm |
| Item |
Unit |
Typical Values |
| Exterior |
/ |
white powder |
| Density |
kg/m³ |
2.65 ×103 |
| Moh's hardness |
/ |
7 |
| Coefficient of linear expansion |
1/k |
14×10-6 |
| Pyroconductivity |
w/k.m |
12.6 |
| Refraction coefficient |
/ |
1.54 |
Applications
▸ High-end Optical Coatings: AR/VR lenses, camera lens coatings
▸ Electronic Encapsulation: IC packaging, EMC epoxy molding compounds
▸ Specialty Ceramics: Structural ceramics, electronic ceramic substrates
▸ Polymer Composites: Silicone rubber, engineering plastic reinforcement
Packaging & Shipping
-
25kg/aluminum foil bag (moisture-proof + anti-static)
-
500kg/pallet (customizable ton bags available)
-
Third-party inspection supported
Certifications
ISO 9001:2015 Certified
Compliant with RoHS/REACH
FAQ
Q: Can you provide classified particle sizes?
A: Yes, available in 0.5-5μm / 5-15μm / 15-25μm grades.
Q: What is the MOQ?
A: 100kg for standard grades, samples available (1kg trial pack).
Why Choose Us?
✓ 5+ years of silica powder manufacturing experience
✓ Monthly capacity: 300 tons
✓ Technical collaboration with the Chinese Academy of Sciences
✓ Free technical support for customized 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
Audited Supplier 
){kind=link}