Bulk Silica Gel |
Indicating and Non-Indicating Silica Gel |
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10" x 30" PET/Foil/Poly Moisture Barrier bags
PFP400 Film.
Just $84.50 per 100 bags, while supplies last. Click here |
Silica Gel is a technical name applied to a broad family of inorganic materials made by reacting sodium silicate and sulfuric acid. The final product is formulated after a series of washing, rinsing, and heating processes. Silica Gel is a regenerative adsorbent consisting of amorphous silica. It is a noncombustible and nontoxic substance that is highly stable. It is compatible with most compounds, excluding hydrofluoric acid and alkalines (olefines, esters, ethers, ketones, amines, and diluted ammonia). Silica gel is widely used due to its high adsorption capabilities, stability, thermal resistance, and high mechanical strengths. There are a variety of silica gel types that are used in numerous static and dynamic drying applications. Type A (narrow pore) White Beaded and Granular Silica Gels This translucent bead or granule (granular) is widely used for both static and dynamic air & gas drying. The product is available in 0.5-1.0, 1.0-2.0, 1.0-3.0, 2.0-3.0, and 2.0-5.0 mm in beaded and granular forms. In static drying applications the white A silica gel is used for desiccant packaging, flower drying, filtration, air breathers, and boiler storage. Applications for the white A silica gel are compressed air and processed gas drying, filtration, natural gas dehydration, air dehumidification, and hydrocarbon adsorption in air separation units. Silica gel can be used to dry the following compounds:
Type B (wide pore) White Beaded and Granular Silica Gel The type B silica gel has a larger pore size than the traditional A type gel. The pore size averages between 60 & 80 Angstroms as compared to 22 Angstroms for the A gel. Applications for the B gel include drying of liquids, humidity control (static), desiccant packaging, buffer layer (protection) in air drying, perfume carrier, heavy metal adsorption in liquid streams, and catalyst carrier. Type A Blue (Beaded or Granular) Indicating Silica Gel Blue Indicating Silica Gel has a cobalt chloride content that changes from blue to pink when exposed to moisture. The color change begins at 6 % (weight percent) loading and is completed at 13 B 14 weight percent. The product is not completely saturated at this point. The blue indicating silica gel has an adsorption capacity of 35 % (by weight). When the blue gel turns to pink, it can then be either regenerated or disposed. Regeneration can be carried out in a drying oven at temperatures exceeding 100 C. The process is complete when the product has assumed its original blue color. Applications for the blue indicating gel include laboratory apparatuses, desiccant packaging, filtration, instrumentation protection, air breathers, air drying, and numerous static drying uses (where an indicator is necessary). Type A Yellow (Beaded or Granular) Indicating Silica Gel In 1998, the European Union labeled cobalt chloride as a carcinogen and thus eliminated the use of blue indicating silica gel in Europe. Blue indicating gel can be sold in Europe, but it must be labeled correctly and disposed as a hazardous waste. To meet the needs of the European market, Transo-Pharm USA offers a yellow-green indicating gel. There are other alternative indicating gels in the market, but the yellow-green color change is the most distinct. The color change for the yellow gel starts at 6 % weight percent and is completed at 13 - 14 %. Applications for the yellow indicating silica gel include pharmaceutical use, laboratory apparatuses, desiccant packaging, air breathers, desiccant filtration, static drying, and air-drying.
This product is also available in pre-packaged pouches, packets & canisters:
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Texas
Technologies, Inc.
3600 West Whitestone Blvd. Cedar Park, TX 78613 512-267-0100
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