Silica Gel

It adsorbs moisture and holds it physically within its pores, protecting packed goods, drying compressed air and process gases, and stabilising moisture-sensitive materials in storage and transit. The same pore structure makes it useful as a separation medium, as a carrier for liquids on a dry solid, and as a matting agent in coatings. Adsorption capacity is a property of the specific grade and its conditions of use, and is taken from producer data rather than assumed here.

The duty decides the pore structure: moisture adsorption at low humidity, bulk drying of gas or liquid, separation, or use as a carrier or matting agent each favour different pore and particle characteristics. State what is being dried or adsorbed, the operating humidity and temperature, whether the material will be regenerated, the bed or pack format, and the presentation your process or packing line can handle.

Precipitated silica, fumed silica, colloidal silica, silica flour and diatomaceous earth are separate materials with their own canonical pages, and silica fume (microsilica) is different again. Silica gel is distinguished by its rigid internal pore structure and adsorptive duty. Indicating and non-indicating types, bead size, pore size, desiccant grade, chromatography grade and matting grade are all forms, grades and applications of this one material and are handled inside this record rather than published as separate pages.

Suppliers report particle size in different conventions — mesh, percentage passing a stated mesh, micron top cut, or D50 from a named measurement method — and the numbers are not interchangeable between conventions. State the convention your specification uses, along with the property window you actually need, and comparison is made like for like. Moisture, pH, bulk density, swelling behaviour, heavy metals and any documentation requirement are reviewed the same way, against producer data for the grade offered.

This page asserts no purity, assay, mesh, micron, D50, brightness, swelling capacity, moisture, pH, bulk density, surface area, heavy-metal limit, origin, mine, packing, minimum quantity, certification, approval, availability, lead time or price. Every commercially meaningful value is taken from producer documentation for the exact grade offered and confirmed in writing before order.

Allzone sources this material through producer channels and quotes it per enquiry. Origin, mining location and processing location are selected against your technical requirement, quantity, documentation need and destination, and are stated in the offer rather than fixed by this page. Mineral powders have low value density, so freight, discharge point and packaging format move landed cost as much as the material price; quotations are compared delivered to your plant.

Technical data sheet, safety data sheet and certificate of analysis for the exact grade offered are requested from the producer and shared with the quotation. Mineral powders create airborne dust during transfer and bagging, and respirable crystalline silica content varies by material and by grade, so it is treated as an SDS and workplace-controls question for the specific grade rather than a figure published here. Where a declaration matters to your application — food contact, feed, potable water, cosmetic or regulatory — it is confirmed for that grade and intended use rather than assumed from this page.

Send the material or system it goes into, the process it runs on, the function you need it to perform, the property window your specification calls for in your own convention, the annual and per-shipment quantity, the packaging format your intake can receive, the documentation required per shipment and the delivery province or port. Several materials can be listed in one enquiry and reviewed together rather than split into separate requests.