Gypsum powder is usually white and colorless. Colorless transparent crystals are called permeable gypsum, and sometimes gray, light yellow, light brown, etc. due to impurities. The streaks are white. Clear. Glass luster, pearl luster, fibrous aggregate silk luster. The dissociation is extremely complete and moderate, and the dissociation fragments form rhombic bodies with surface angles of 66 and 114. Brittle sex. Hardness 1.5 to 2. There is a slight change in different directions. Relative density 2.3. Gypsum powder is one of the top five gel materials and occupies an important position in the national economy. It is widely used in many application fields such as construction, building materials, industrial molds and art models, chemical industry and agriculture, food processing and beauty, etc., and is an important industrial raw material. Benefits In the food industry, its official name is “food additive calcium sulfate”, commonly known as “edible gypsum”. It can only be produced using natural gypsum, and chemical gypsum is strictly prohibited. Its application in food has been around for thousands of years. At the beginning of China*, it was widely used to order tofu. With the development of society, calcium sulfate (edible gypsum), a safe and non-toxic food additive that has been strictly tested by practice, is becoming more and more widely used in the edible industry. The uses of calcium sulfate in food include: nutritional agent, yeast activator, dough property modifier, curing agent, chelating agent, gelling agent, baking powder, carrier, filler, pH regulator, abrasive. Among these uses it is mainly used in baked goods. As a curing agent it is used in canned potatoes, tomatoes, carrots, beans and pepper. Calcium sulfate is also used as an ingredient in candy preserves, ice cream, and other frozen desserts. Calcium sulfate is also used in beer brewing, and is added to the malt process to increase the content of calcium ions in the water. Calcium sulphate is used as an abrasive in cleaners for contact with food. Calcium sulfate is also used in cosmetics and toothpaste.