Overview
Quartz (CAS 14808-60-7 ), also sold as Silicon Dioxide or E551 in food-contact and industrial contexts, is a naturally occurring crystalline mineral processed for use across construction and electronics.
It functions primarily as a functional filler, abrasive, and rheology modifier in solid and composite systems. In building and construction, it is compounded into mortars, grouts, and engineered stone slabs.
These applications help to control hardness, dimensional stability, and surface texture. Electronics manufacturers rely on high-purity quartz as a raw material for silicon wafer production and as a filler.
It is frequently used in epoxy encapsulants for semiconductor packaging. Foundry and refractory applications use quartz sand as a mold medium and heat-resistant aggregate in furnace linings.
In plastics and polymer compounding, milled quartz improves scratch resistance and reduces shrinkage in thermoset and thermoplastic systems. It is supplied as mined sand, crushed stone, and milled powder.
The material is available across a broad particle size range, from coarse aggregates to sub-micron grades. Standard commercial grades include technical, foundry, and high-purity electronic grades.
Purity levels are typically specified by SiO2 content. Surface-treated variants are available for polymer compounding applications where improved matrix adhesion is required for the final product.
Contact us for supply of Quartz
Physical Properties
| Melting Point | 1610 °C |
| Boiling Point | 2230 °C |
| Density | 2.6 g/cm³ |
| Appearance | Silicon dioxide/crystalline silica is a component of many mineral dusts and materials which melts to a glass at very high temperature. |
| Color | white |
| Form | powder |
| Water Solubility | insoluble |
| Refractive Index | n 20/D 1.544(lit.) |
| pH | 5-8 (400g/l, H2O, 20℃)(slurry) |
Safety & Handling
Warning GHS07 GHS08 Hazard Statements H315 Causes skin irritation H319 Causes serious eye irritation H320 Causes eye irritation H335 May cause respiratory irritation H341 Suspected of causing genetic defects H350 May cause cancer H372 Causes damage to organs through prolonged or repeated exposure H373 May causes damage to organs through prolonged or repeated exposure Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 25061000 |
| Storage Class | 6.1D - Non-combustible acute toxic Cat.3 toxic hazardous materials or hazardous materials causing chronic effects |
| WGK (Germany) | 3 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 14808-60-7
- EC Number
- 238-878-4
- Mol. Weight
- 60.084
- HS Code
- 25061000
- Category
- Salts & Minerals