SOLUM DIATOMEAE- ▸ Anti-caking / free-flow: flow agent in powders and granular products
- ▸ Rheology control: thickener and viscosity modifier in liquids and gels
- ▸ Carrier / adsorbent: liquid carrier for actives
- ▸ Reinforcing filler: rubber and tire-compound reinforcement
- ▸ Abrasive: mild abrasive in cleaning and care products
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Synthetic amorphous silica (CAS 7631-86-9, SiO2). It is used as an anti-caking and free-flow agent in powders, a liquid carrier and adsorbent, a viscosity-control/thickening agent, a defoamer, a mild abrasive, and a reinforcing filler in rubber and tire compounds.
Frequently Asked Questions
What is amorphous silica powder used for?
Synthetic amorphous silica (SiO2, CAS 7631-86-9) is used industrially as an anti-caking and free-flow agent in powders and granular products, a thickener/viscosity modifier in liquids and gels, a liquid carrier and adsorbent for actives, a defoamer, a mild abrasive, and a reinforcing filler in rubber and tire compounds.
What is the difference between amorphous and crystalline silica?
Both are silicon dioxide (SiO2), but they differ in molecular structure: amorphous silica has a disordered, non-crystalline arrangement, while crystalline silica (e.g., quartz) has an ordered lattice. The grade we supply is synthetic amorphous silica. For handling, hazard, and classification details, refer to the SDS.
Is amorphous silica the same as diatomaceous earth?
No. Diatomaceous earth is a naturally occurring sedimentary deposit of fossilized diatoms; synthetic amorphous silica (CAS 7631-86-9) is a manufactured SiO2 product. Both are silica-based but differ in source, particle morphology, and purity. We supply synthetic amorphous silica.
What is the CAS and HS code for amorphous silica?
Amorphous silica carries CAS 7631-86-9 with the formula SiO2. It is classified under HS code 2811.22 (silicon dioxide). A CoA and SDS are provided with each shipment.
How is bulk amorphous silica packaged and ordered?
We supply synthetic amorphous silica in bulk industrial quantities for manufacturers. Request a bulk quote with your target volume, grade requirement, and end use, and we will confirm available packaging and lead time along with a CoA and SDS.
