High Quality Quartz Powder SiO2 Crystalline Powder Bulk Supply

Overview of Crystalline Silica Powder Crystalline Quartz Powder SiO2  

Crystalline silica Powder, also known as crystalline silica powder, refers to silica (SiO ₂) powder with a regular crystal structure. This powder is usually derived from natural quartz ore and is obtained through fine processing. The SiO ₂ content in crystalline silicon powder is relatively high, usually reaching over 99%. Crystal quartz powder, also known as crystalline quartz powder, is a type of crystalline silicon powder, specifically referring to powder processed from natural quartz ore. SiO ₂, also known as silicon dioxide, is the most common form of silicon oxide and is widely present in nature. These powders have broad application potential in multiple fields, especially in materials science and process manufacturing, due to their high purity, high crystallinity, and good stability.

(Crystalline Silica Powder Crystalline Quartz Powder SiO2)

Features of Crystalline Silica Powder Crystalline Quartz Powder SiO2   

High purity: Crystalline silicon powder usually has high purity, high SiO ₂ content, and few impurities.

Good stability: At room temperature, crystalline silicon powder has stable chemical properties and is not easily reactive with other substances.

Excellent insulation: Crystalline silicon powder has excellent insulation performance and is an ideal choice for manufacturing electronic components and semiconductor materials.

High refractive index: Crystalline silicon powder has a high refractive index and is therefore commonly used in the manufacturing of optical glass and lenses.

Good wear resistance: Crystalline silicon powder has high hardness and good wear resistance, suitable for manufacturing wear-resistant coatings and abrasives.

Widely applicable fields: Crystalline silicon powder has been widely used in various fields such as construction, chemical industry, electronics, ceramics, etc.

Parameter table of Crystalline Silica Powder Crystalline Quartz Powder SiO2

Crystalline Silca Crystalline Quartz powder SiO2 Properties
Other Names	crystalline quartz, crystalline silica, SiO2
CAS No.	N/A
Compound Formula	SiO2
Molecular Weight	60.09
Appearance	White Powder
Melting Point	1,600° C (2,912° F)
Solubility in water	N/A
Density	2533 kg/m3
Purity	99.5-99.9%
Particle Size	10-30nm
Boling point	2,230° C (4,046° F)
Specific Heat	N/A
Thermal Conductivity	N/A
Thermal Expansion	N/A
Young’s Modulus	N/A
Exact Mass	59.9668 g/mol
Monoisotopic Mass	59.967 Da
Crystalline Silca Crystalline Quartz powder SiO2 Health & Safety Information
Safety Warning	Danger
Hazard Statements	N/A
Flashing point	Not applicable
Hazard Codes	N/A
Risk Codes	N/A
Safety Statements	N/A
RTECS Number	N/A
Transport Information	NONH
WGK Germany	NONH

Application of Crystalline Silica Powder Crystalline Quartz Powder SiO2     

Construction industry:

Crystalline silica powder: used to manufacture high-performance concrete, mortar, and brick products, improving the strength and durability of materials.

Crystal quartz powder: Due to its high hardness and wear resistance, it is commonly used in the manufacturing of wear-resistant coatings and flooring materials.

Application of Crystalline Silica Powder Crystalline Quartz Powder SiO2  

SiO ₂: As a key component in glass curtain walls and windows, it provides transparency and structural strength.

Electronics and Semiconductor Industry:

Crystalline silicon powder: It is an important raw material for manufacturing integrated circuits, solar panels, and semiconductor devices.

SiO ₂: Widely used as an insulation layer, it plays an isolation and protection role in integrated circuits and transistors.

Application of Crystalline Silica Powder Crystalline Quartz Powder SiO2  

Ceramic and Glass Industry:

Crystal quartz powder: Due to its high purity and chemical stability, it is commonly used in the manufacturing of advanced ceramic products and special glass.

SiO ₂: It is the basic raw material for manufacturing ceramics and glass, endowing products with excellent thermal and chemical stability.

Application of Crystalline Silica Powder Crystalline Quartz Powder SiO2  

Rubber and Plastic Industry:

Crystalline silicon powder: can be used to enhance the strength, wear resistance, and aging resistance of rubber and plastics.

SiO ₂: As a filler, it can increase the volume of the material, reduce costs, and improve its processing performance.

Cosmetics and personal care products:

SiO ₂: It is often used to manufacture loose powder, foundation make-up, toothpaste and other products to provide texture and smoothness.

Application of Crystalline Silica Powder Crystalline Quartz Powder SiO2  

Optics and Instrument Manufacturing:

Crystal quartz powder: Due to its high refractive index and optical properties, it is used to manufacture lenses, prisms, and optical instruments.

SiO ₂: plays a crucial role in optical fibers for long-distance optical signal transmission.

Production Method of Crystalline Silica Powder Crystalline Quartz Powder SiO2

1.Physical Crushing Method

Raw Material: Natural quartz ore (e.g., vein quartz, quartzite).

Process:

Crushing: Reduce ore to 10–50 mm via jaw crushers.

Grinding: Use ball mills or Raymond mills to achieve 10–500 μm particle size.

Classification: Separate particles via sieving or air classification.

Purification: Acid washing/magnetic separation removes impurities (Fe, Al), yielding ≥99% purity.

Advantages: Low cost, scalable for industrial applications.

Limitations: Purity depends on ore quality.

2. Chemical Synthesis (High-Purity Route)

Sol-Gel Method:

Hydrolyze tetraethyl orthosilicate (TEOS) to form silica sol.

Dry and calcine at 800–1200°C to produce crystalline SiO₂ powder.

Precipitation Method:

React sodium silicate (Na₂SiO₃) with acid to precipitate silicic acid.

Calcinate to remove impurities, achieving ≥99.9% purity.

Advantages: High purity (up to 99.99%), suitable for electronics/optics.

3. Chemical Vapor Deposition (CVD) for Nanoscale Powder

Process:

React silicon tetrachloride (SiCl₄) or silane (SiH₄) with O₂ at 1000–1400°C:\ \(\text{SiCl}_4 + 2\text{O}_2 \rightarrow \text{SiO}_2 + 2\text{Cl}_2\).

Deposit SiO₂ vapor onto substrates as nanocrystalline powder.

Advantages: Uniform nanoscale particles (10–100 nm), ideal for advanced materials.

4. Hydrothermal Synthesis

Process:

React quartz sand with NaOH in a high-pressure autoclave (200–400°C) to form sodium silicate.

Acidify to precipitate silicic acid, then calcinate to crystalline SiO₂.

Advantages: Controllable crystal morphology (e.g., rods, spheres).

 

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality Crystalline Silica Powder Crystalline Quartz Powder SiO2 , please feel free to contact us or click on the needed products to send an inquiry. 

Storage Condition of Crystalline Silica Powder Crystalline Quartz Powder SiO2

Airtight Containers: Store in sealed plastic bags, glass jars, or metal drums to prevent moisture absorption and dust contamination.

Dry Environment: Maintain relative humidity ≤40% and temperatures between 15–25°C. Use desiccants (e.g., silica gel) in packaging to absorb residual moisture.

Chemical Isolation: Avoid contact with strong acids (e.g., HCl, H₂SO₄), bases (e.g., NaOH), or reactive compounds to prevent chemical degradation.

Stable Handling: Store in a vibration-free area to minimize particle agglomeration. Avoid excessive pressure on containers.

Light and Heat Protection: Keep away from direct sunlight and heat sources (e.g., radiators, ovens) to prevent thermal expansion or structural changes.

Payment Term

L/C, T/T, Western Union, Paypal, Credit Card etc.

 

Shipment Term

By sea, by air, by express, as customers request.

5 FAQs of Crystalline Silica Powder Crystalline Quartz Powder SiO2

Q1

What industries are the main applications of crystalline silica powder?

Answer: Crystalline silicon powder is mainly used in industries such as construction, ceramics, electronics, rubber, and coatings. Due to its high purity, stability, and excellent insulation performance, it is widely used in the manufacturing of various high-performance materials and electronic components.

Q2

What is the difference between crystalline quartz powder and regular quartz powder?

Answer: The primary difference between crystalline quartz powder and average quartz powder hinges on their crystallinity and purity. Crystalline quartz powder has a high degree of crystallinity and a standard crystal framework. In contrast, ordinary quartz powder may have lower crystallinity and consist of more impurities.

Q3

What role does SiO ₂ (silicon dioxide) play in glass manufacturing?

Answer: SiO ₂ is just one of the main components in glass manufacturing, supplying the standard structure and architectural stability of glass. By readjusting the web content of SiO ₂, the firmness, refractive index, and heat resistance of glass can be managed.

Q4

What are the differences in the application of crystalline silicon powder and crystalline quartz powder in the field of optics?

Answer: Crystalline silicon powder is mainly used to manufacture optical components such as optical glass and lenses, utilizing its high refractive index and good light transmittance performance. Crystalline quartz powder is more commonly used to manufacture advanced grinding materials and cutting tools, utilizing its high hardness and wear resistance.

Q5

What is the melting point of SiO ₂ (silicon dioxide)?

Answer: The melting point of SiO ₂ (silicon dioxide) is very high, about 1713 ° C. This allows SiO ₂ to maintain its structure and performance stability even in high temperature environments.