硅胶主要成分是二氧化硅，化学性质稳定，不燃烧。硅胶是一种非晶态二氧化硅，应控制车间粉尘含量不大于10毫克/立方米，需加强排风，操作时戴口罩。
硅胶有很强的吸附能力，对人的皮肤能产生干燥作用，因此，操作时应穿戴好工作服。若硅胶进入眼中，需用大量的水冲洗，并尽快找医生治疗。
蓝色硅胶由于含有少量的氯化钴，有潜在毒性，应避免和食品接触和吸入口中，如发生中毒事件应立即找医生治疗。
硅胶在使用过程中因吸附了介质中的水蒸汽或其他有机物质，吸附能力下降，可通过再生后重复使用。
一般来说，硅胶按其性质及组分可分为有机硅胶和无机硅胶两大类。
无机硅胶是一种高活性吸附材料，通常是用硅酸钠和硫酸反应，并经老化、酸泡等一系列后处理过程而制得。硅胶属非晶态物质，其化学分子式为mSiO2 .nH2O。不溶于水和任何溶剂，无味，化学性质稳定，除强碱、氢氟酸外不与任何物质发生反应。各种型号的硅胶因其制造方法不同而形成不同的微孔结构。硅胶的化学组份和物理结构，决定了它具有许多其它同类材料难以取代的特点:吸附性能高、热稳定性好、化学性质稳定、有较高的机械强度等，家庭用做干燥剂，湿度调节剂，除臭剂等;工业用作油烃脱色剂，催化剂载体，变压吸附剂等;精细化工用分离提纯剂，啤酒稳定剂，涂料增稠剂，牙膏摩擦剂，消光剂等。
有机硅胶是一种有机硅化合物，是指含有Si-C键、且至少有一个有机基是直接与硅原子相连的化合物，习惯上也常把那些通过氧、硫、氮等使有机基与硅原子相连接的化合物也当作有机硅化合物。其中，以硅氧键(-Si-O-Si-)为骨架组成的聚硅氧烷，是有机硅化合物中为数多，研究深、应用广的一类，约占总用量的90%以上。
挤出硅胶比较常见，例如家用的电饭煲上的密封圈，称之为电饭煲硅胶密封圈。
模压硅胶比较复杂一点，形状不规则，包括硅胶碗，硅胶冰格，硅胶蛋糕模等等。
The main component of silicone is silicon dioxide, which is chemically stable and non combustible. Silicone is an amorphous silicon dioxide, and the dust content in the workshop should be controlled to not exceed 10 milligrams per cubic meter. Ventilation should be strengthened, and masks should be worn during operation.
Silicone has strong adsorption ability and can dry human skin. Therefore, work clothes should be worn during operation. If silicone enters the eyes, rinse with plenty of water and seek medical treatment as soon as possible.
Blue silicone contains a small amount of cobalt chloride and has potential toxicity. It should be avoided from contact with food and inhalation. If poisoning occurs, seek medical treatment immediately.
Silicone gel has a decreased adsorption capacity due to the adsorption of water vapor or other organic substances in the medium during use, and can be reused after regeneration.
Generally speaking, silica gel can be divided into two categories based on its properties and components: organic silica gel and inorganic silica gel.
Inorganic silica gel is a highly active adsorbent material, usually prepared by reacting sodium silicate with sulfuric acid and undergoing a series of post-treatment processes such as aging and acid foaming. Silicone is an amorphous substance with the chemical formula mSiO2. nH2O. Insoluble in water and any solvent, odorless, chemically stable, and does not react with any substance except strong bases and hydrofluoric acid. Various types of silicone gel form different microporous structures due to their different manufacturing methods. The chemical composition and physical structure of silicone determine that it has many characteristics that are difficult to replace by other similar materials: high adsorption performance, good thermal stability, stable chemical properties, and high mechanical strength. It is used as a desiccant, humidity regulator, deodorizer, etc. in households; Used as an oil and hydrocarbon decolorizer, catalyst carrier, pressure swing adsorbent, etc. in industry; Fine chemical separation and purification agents, beer stabilizers, coating thickeners, toothpaste friction agents, matting agents, etc.
Organic silicone is a type of organic silicon compound that contains Si-C bonds and at least one organic group directly connected to silicon atoms. Compounds that connect organic groups to silicon atoms through oxygen, sulfur, nitrogen, etc. are also commonly referred to as organic silicon compounds. Among them, polydimethylsiloxane composed of silicon oxygen bonds (- Si-O-Si -) as the skeleton is one of the most widely studied and widely used types of organosilicon compounds, accounting for more than 90% of the total dosage.
Squeezing silicone is quite common, such as the sealing ring on household rice cookers, which is called the silicone sealing ring for rice cookers.
Silicone molding is more complex and irregular in shape, including silicone bowls, silicone ice cubes, silicone cake molds, and so on.
