Product Information
Silicon dioxide (CAS No. 7631-86-9) is a white amorphous or crystalline powder with the molecular formula SiO₂. Also known as silica or quartz sand, it is an important inorganic non-metallic compound with excellent chemical stability, high-temperature resistance, adsorption properties, and reinforcing capabilities. It is widely used in food, chemical, building materials, and daily chemical industries, serving as a versatile basic raw material.
Product Description
|
Molecular Formula |
SiO2 |
|
Molecular Weight |
60.08 |
|
CAS |
7631-86-9 |
|
EINECS |
231-545-4 |
|
HS Code |
2811221000 |
|
Appearance |
White powder or granules |
|
Packaging |
10kg/bag |
COA
| Standard | National Standard GB25576-2010 | |
| Test items | Spec. | Results |
| SiO2%(Ignited) | ≥96 | 98.2 |
| Ignition Loss% | ≤8.5 | 5.1 |
| Moisture Loss% | ≤5 | 4.4 |
| Heavy Metals as Pb mg/kg | ≤30 | <30 |
| Pb mg/kg | ≤5 | <5 |
| As mg/kg | ≤3 | <3 |
| Apparent density g/mL | <0.3 | 0.21 |
| Oil absorption mL/g | ≥2.0 | 3.2 |
| Average grain diameter | 14-25 | 15 |
| Specific area m2/g | ≥175 | 215 |
Uses and Applications
- Food Industry: Used as an anti-caking agent and flow agent, added to powdered foods (such as milk powder, seasonings, and protein powder) to prevent clumping and improve flowability, subject to national standard limits.
- Chemical and Rubber Industry: Used as a rubber reinforcing agent to improve the strength, wear resistance, and aging resistance of rubber products; also used as a plastic filler to improve the mechanical properties of plastics, suitable for tires, seals, and plastic pipes.
- Building Materials Industry: A core raw material for glass, ceramics, cement, and other products, improving the hardness, heat resistance, and stability of building materials; also used in coatings and putties to enhance adhesion and wear resistance.
- Daily Chemical Industry: Used in cosmetics (such as loose powder, face cream, and toothpaste) as a filler and adsorbent to improve product texture and oil control; also used as a detergent additive to enhance cleaning power.
Hot Tags: silicon dioxide cas:7631-86-9, China silicon dioxide cas:7631-86-9 manufacturers, suppliers, factory, carotenoids, intranasal glutathione, antioxidant rich, nac cysteine, antioxidant products, nac benefits
