Brand Overview
Used in numerous applications as a raw material or functional additive, high-purity fumed silica optimizes product properties. ZANDOSIL® is a synthetic, amorphous silica of the highest purity, available in three forms: powder, granules, and dispersion. Our cleanroom production in Bitterfeld-Wolfen, Germany, guarantees exceptional product quality with minimal contamination and maximum process reliability. Through customized solutions and the expertise of our fumed silica team, we offer materials that meet the highest standards in industry and research.
Customer benefits
ZANDOSIL® offers a range of benefits, making it a versatile solution for various applications:
Reliable top performance
Highest purity without chlorine and impurities – for reliable quality and long-lasting performance, even under demanding conditions.
Durable and resistant
Chemically stable against aggressive substances – for use in challenging industrial environments without loss of performance.
Safe at high temperatures
Excellent thermal stability and insulating properties – ideal for applications in high-temperature environments or complex heat management systems.
Efficient process integration
Optimal flow properties – for smooth molding, casting, and bonding without additional effort.
Easy and flexible to use
User-friendly and versatile – saves time during processing and adapts easily to different requirements.
Product Solutions of ZANDOSIL®
ZANDOSIL® Powder
Our powder is free from impurities and chlorine and is available with a BET surface area of 30 m²/g. The purity ranges from 99.99% to 99.999%.
Products:
• ZANDOSIL® 30 – Standard form with high purity for versatile applications.
• ZANDOSIL® 30P – High-purity powder sieved to 100 µm for maximum purity.
• ZANDOSIL® 30T – Titanium-modified for improved particle stability and thermal properties.
Technical Data
ZANDOSIL® 30 / 30P | ZANDOSIL® 30T | |
Appearance | white, fluffy powder | white, fluffy powder |
Silicon dioxide content (dried material) (wt. %) | > 99.99 | > 99.99 |
Crystal structure | amorphous | amorphous |
property in contact with water/moisture | hydrophilic | hydrophilic |
Bulk density (g/l) | approx. 200 | approx. 400 |
Residue from sieving (ref. to DIN EN ISO 787-7) (wt. %) | < 0.1 | < 0.5 |
BET-surface area (m2/g) | 30 ± 5 | 25 ± 10 |
Particle size D50 (μm) | approx. 9 | approx. 0.3 |
pH of substance dispersed in water (4 %) | 4.8 ± 0.3 | 4.8 ± 0.3 |
Loss on drying (2 h at 105 °C) (wt. %) | 0.2 ± 0.1 | 1.7 ± 0.1 |
Loss on ignition (2 h at 1000 °C) (wt. %) | 0.7 ± 0.1 | 1.5 ± 0.1 |
Chlorine content (wt. %) | 0 | 0 |
Downloads
Data Sheet: ZANDOSIL® 30, 30P and 30T
Download
ZANDOSIL® Granules
Our granules have a particle size of 260 µm (D50). Post-purification can increase the purity to over 99.999%.
Product:
• ZANDOSIL® G260 – High-purity granules with excellent flow properties.
Technical Data
ZANDOSIL® G260 | |
Appearance | white granules |
Silicon dioxide content (dried material) (wt. %) | > 99.99 |
Crystal structure | amorphous |
Property in contact with water/moisture | hydrophilic |
Bulk densitiy (g/l) | approx. 800 |
BET-surface area (m²/g) | 30 ± 5 |
Particle size D50 (µm) | 260 |
pH of substance dispersed in water (4 %) | 4.8 ± 0.3 |
Downloads
Data Sheet: ZANDOSIL® G260
Download
ZANDOSIL® Dispersion
Our water-based dispersion comes with a standard solids content of 63%. However, we can customize the solids content to achieve a purity of over 99.999% to meet your specific needs.
Product:
• ZANDOSIL® S63 – Ideal solids content for maximum performance.
