How to distinguish food-grade silicone and regular silicone?

February 15,2022
food grade silicone 1000x500
As the issue of food safety has received more and more attention, and the epidemic has greatly changed people's eating habits, more and more silicone environmentally friendly tableware packaging bags have appeared in the market to replace disposable plastic products. Although we have been emphasizing the non-toxic and safe characteristics of silicone in the previous articles, different ingredients will be used for production according to specific product uses, and the relevant certification procedures will be left. Today, let's talk about food-grade silicone and ordinary silicone. The difference, and how to tell whether the silicone is food grade or not.

What is food-grade silicone rubber?

Does food-grade silicone mean edible? Of course not! To emphasize a concept again, silicone is indeed a safe, non-toxic, and harmless raw material in general. Even so, it can be divided into food grade and ordinary grade. Food-grade silicone generally refers to all products that come into contact with our diet, such as baby pacifiers, straws, food containers, tableware, etc. Ordinary grade silicone is generally used for industrial purposes and cannot be applied to such food-related products.

What is the difference between food-grade and ordinary silicone?

Manufacturing procedure

Food-grade silicone is generally made of imported raw materials, and the quality of the raw materials has been determined at the beginning, so the relevant quality inspection report when purchasing raw materials is indispensable. This is not to say that the quality of ordinary silicone is not good, but that there are different application fields between the two. Ordinary silicone rubber products are produced by mixing ordinary silicone rubber, while food-grade products with higher quality requirements are made of food-grade fumed rubber. We know that silica is one of the main components of silica gel, and the purity density of fumed silica is higher than that of ordinary silica, so it will be different in the finished product, but the difference between the two is not big. , mainly in the difference in tensile strength. Food-grade silicone has a reinforcing effect on the tensile properties, so there will be no whitening during the stretching process. Therefore, it is from this point to judge whether the silicone product is food grade or not.


Food-grade silicone is an inorganic polymer colloid material formed by polycondensation of silicic acid. It is non-toxic, tasteless, and has stable chemical properties. Except for caustic alkali and hydrofluoric acid, it does not react with any acid and alkali salts under normal conditions. It can withstand a high temperature of 220 ℃, so it can be used in a microwave oven without any effect on the human body. Compared with other materials, it has safer and healthier characteristics. Food-grade silicone has strong stability properties and is more in line with the requirements of a healthy and safe life.


Food-grade silicone commodities are silicone products made from food-grade silicone rubber raw materials. According to market demand, it needs to meet the environmental testing requirements of NSF, FDA, RoSH, RECH, and so on.

What is FDA?

FDA is the English abbreviation of U.S. Food and Drug Administration. It is an international medical review authority, authorized by the U.S. Congress, the federal government, and the highest law enforcement agency specializing in food and drug management. The FDA is a monitoring agency of government health regulation composed of professionals such as doctors, lawyers, microbiologists, pharmacologists, chemists, and statisticians dedicated to protecting, promoting, and enhancing the nation's health. Foods, drugs, cosmetics, and medical devices certified by the FDA are safe and effective for the human body. In nearly 100 countries including the United States, only FDA-approved materials, devices, and technologies can be used for commercial clinical applications

The application of food-grade silicone rubber


Food-grade silicone is a kind of environmentally friendly silicone, non-toxic, odorless, and highly transparent. It is suitable for environmentally friendly lunch boxes, tableware, bags, and straws for food contact.

Baking and cooking utensils

Food-grade silicone is soft, elastic, resistant to kinking, has no deformation, no cracking, has a long service life, cold, and high-temperature resistance, so it is widely used in food molds such as chocolate molds, candy molds, and kitchen utensils, spatulas, clamps, etc. 

Baby products

Food-grade silicone will not turn yellow when placed at room temperature, will not be sprayed with frost, will not spit white, will not fade, will not be scaled in water for a long time, and has no peculiar smell. Commonly used baby pacifiers and breast milkers are made of food-grade silicone.


One thing for sure is that in many industries, the importance of material selection has a certain effect on the quality and performance of the product. The source of the silicone rubber raw material of Glory Sun is compliant, and the physical property and relevant test reports for each material are attached as endorsements. Submit your request and we will give you an answer!

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