A desiccant is a hygroscopic substance that is used to induce or sustain a state of dryness (desiccation) in its vicinity; it is the opposite of a humectant. Commonly encountered pre-packaged desiccants are solids that absorb water .

Silica xerogel with an average pore size of 2.4 nanometers has a strong affinity for water molecules and is widely used as a desiccant. It is hard and translucent, but considerably softer than massive silica glass or quartz, and remains hard when saturated with water.

2021年10月10日 · Desiccants remove moisture from solvents and gas streams. Desiccants often serve a dual purpose, as most absorb odors as well as moisture. When you get silica gel packets, don’t just throw them away. They serve many useful purposes: Dry out a wet phone by sealing it in a plastic bag with silica gel packets overnight.

2023年5月28日 · What is Desiccant Silica Gel? Silica gel is a “desiccant,” which means that it’s used to keep things dry. Silica gel is made from silicon dioxide — a compound naturally found in sand —...

2023年2月8日 · Difference Between Desiccant and Silica Gel Definition. Desiccants are drying agents that attract moisture in the surrounding environment, while silica gel is a combination of water and silica that is in the form of small pellets. Nature of Absorption. Desiccants either adsorb or absorb water, whereas silica gel only adsorbs water. Relationship

Silica gel is a porous and amorphous form of silicon dioxide, commonly used as a desiccant to absorb moisture and humidity. Silica gel can be classified into two main types: Type A and Type B. The primary difference between them lies in their …

2025年1月7日 · One of the most common types of desiccants is silica gel—it’s the small packets often found tucked into consumer goods. But what sets silica gel apart from other desiccants? Here we’ll explore the unique properties of silica gel and how it compares to other desiccants.

2021年3月9日 · Technically, silica gel packets are desiccants — the broader category of materials that suck up moisture. Bentonite clay, which comes from volcanic ash, and other chemical formulas, like calcium chloride, also end up in similar places as silica gel packets, for the same purpose: to keep water away from products that really shouldn’t get damp.

Silica gel is silicon dioxide (SiO2). It is a naturally occurring mineral that is purified and processed into either granular or beaded form. As a desiccant, it has an average pore size of 24 angstroms and has a strong affinity for moisture molecules. The silica gel will pull in moisture at temperatures up to 220°F (105°C).

2025年3月26日 · Prolonged Shelf Life of Products. Desiccant film plays a crucial role in extending the shelf life of products by controlling moisture exposure.Studies show that using desiccants in packaging significantly increases product longevity. For instance, a multivitamin tablet stored in HDPE bottles with 2 grams of silica gel desiccant achieved a shelf life of 2.6 years, compared to just 1.2 years in ...