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High-Purity Ultra-Fine Crystalline Silica Powder

99%+ High Purity | Strict chemical purification process, extremely low impurity content, meets high-end material requirements
Precise Particle Size Control | D50 0.5μm-25μm customizable, supports nano-scale ultrafine powder
Stable Crystal Structure | High-temperature crystallization treatment, high hardness, low thermal expansion coefficient
Eco-Friendly & Non-Toxic | Complies with RoHS/REACH certifications, safe for electronics and medical applications

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Product Description

Key Selling Points

99%+ High Purity | Strict chemical purification process, extremely low impurity content, meets high-end material requirements
Precise Particle Size Control | D50 0.5μm-25μm customizable, supports nano-scale ultrafine powder
Stable Crystal Structure | High-temperature crystallization treatment, high hardness, low thermal expansion coefficient
Eco-Friendly & Non-Toxic | Complies with RoHS/REACH certifications, safe for electronics and medical applications

Product Parameters

Parameter	Details
Chemical Purity	≥99% (SiO₂ content)
Particle Size	D50 0.5μm-25μm (customizable)
Whiteness	≥90% (ISO standard)
Specific Surface Area	5-30 m²/g (adjustable based on particle size)
Density	2.65 g/cm³ (true density)
Mohs Hardness	7
Moisture Content	≤0.3%
Loss on Ignition	≤0.5% (at 1000°C)

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

Electronic Materials: IC packaging, semiconductor fillers, high-frequency substrates
Coatings Industry: High-end anti-corrosion coatings, ceramic coating hardeners
Plastics & Rubber: Thermally conductive composites, silicone rubber reinforcement
Advanced Ceramics: Structural ceramics, electronic ceramic sintering aids
Other Fields: 3D printing materials, cosmetic sunscreen agents (nano-grade)

Production Process

Adopts an integrated "Washing & Grading - High-Temperature Crystallization - Jet Milling" process to ensure:

No metal ion contamination
Narrow particle size distribution (PDI < 0.3)
Controlled surface hydroxyl content

Packaging & Shipping

Standard Packaging: 25 kg/bag (moisture-proof bag)
Custom Options: 1-ton container shipping available

Quality Assurance

Third-party test reports provided per batch (SGS/BV optional)
Custom particle size and surface modification supported
ISO 9001 / 14001 dual-certified

Why Choose Us?

Direct Manufacturer: Own quartz mine + integrated production line, competitive pricing
Technical Team: Free sample testing & application solution design
Fast Response: Technical support within 48 hours, OEM services available