High Purity Semiconductor Grade Quartz powder (5N5+)

GINDTAY® SEMICONDUCTOR GRADE QUARTZ POWDER (5N5+) is the grade preferred for advanced semiconductor manufacturing because its high purity and precise 90-180 mesh size ensure a dust-free process and minimize the risk of contamination during transport and handling. High purity quartz powder (SiO2) is used in the semiconductor crucible and specialty glass industries for its ultra-low metal impurity content (typically < 0.5 PPM) and its exceptional thermal stability.

CAS number 14808-60-7
Synonyms High Purity Quartz Powder, Silica Sand, Silicon Dioxide, Quartzite

Technical Specifications

semiconductor grade quartz powder 5N5+ specifications Gindtay
Purity (SiO₂)≥ 99.9995% (5N5+)
Aluminum (Al)< 0.5 ppm
Iron (Fe)< 0.3 ppm
Potassium (K)< 0.3 ppm
Sodium (Na)< 0.3 ppm
Lithium (Li)< 0.1 ppm
Copper (Cu)< 0.05 ppm
Chromium (Cr)< 0.05 ppm
Nickel (Ni)< 0.05 ppm
Total Metal Impurities< 0.5 ppm
Hydroxyl Content (OH)≤ 0.5 ppm (dehydroxylated)
Particle Size (D50)90 to 180 mesh
FormWhite granular powder
Testing StandardICP-MS per batch, GB/T31854-2015
Packaging200kg blue sealed drums, ultra-clean environment
MOQ50 metric tons
Sample Quantity100kg available for verification

12-Step Production Process

1 Calcination
2 Water Quenching
3 Crushing
4 Milling
5 Screening
6 Magnetic Separation
7 Flotation
8 Mixed Acid Leaching
9 DI Water Washing
10 Drying
11* Dehydroxylation
12 Ultra-clean Packaging

* Dehydroxylation is an essential process for our 5N5+ grade to ensure superior thermal stability.

Format & Packaging

Our material is delivered in 200kg Blue Sealed Drums to ensure the highest integrity during transit. Each drum is filled and sealed within an ultra-clean environment to prevent secondary contamination, ensuring the 5N5+ standard is maintained upon arrival. This standardized packaging also helps in optimizing the total freight cost for global shipments.

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