Sodium bicarbonate (NaHCO₃), commonly known as baking soda. White fine crystals, less soluble in water than sodium carbonate. It is also an industrial chemical with low toxicity. The solid begins to decompose to produce sodium carbonate, carbon dioxide and water above 50 ° C, and completely decomposes at 440 ° C. Sodium bicarbonate is an acidic salt formed by the neutralization of a strong base with a weak acid, and appears weakly alkaline when dissolved in water. This property makes it suitable as a leavening agent in food production. After the action of sodium bicarbonate, sodium carbonate will remain, and excessive use will make the finished product have an alkaline taste.
Sodium hydrogen carbonate；Sodium hydrogen carbonate;Sodium bicarbonate
Sodium bicarbonate is white crystal or fine crystal of opaque monoclinic system. The specific gravity is 2.15. Odorless, salty, soluble in water, slightly soluble in ethanol. It is soluble in 10 parts of water at 25 ° C and 12 parts of water at about 18 ° C. Its aqueous solution is slightly alkaline due to hydrolysis. It is stable at room temperature and easily decomposes when heated. It gradually decomposes above 50 ° C, completely loses carbon dioxide at 440 ° C, has no change in dry air, and slowly decomposes in humid air.
产品用途 Product Usage
Sodium bicarbonate can be directly used as a raw material for the pharmaceutical industry to treat hyperacidity. It can also be used in filmmaking, tanning, beneficiation, smelting, metal heat treatment, and in the fiber and rubber industries. It is also used as a detergent for wool and for soaking in agriculture. One of the most widely used loosening agents in the food industry. It is used in the production of biscuits, cakes, steamed bread, bread, etc. It is a carbon dioxide generator in soda drinks. Carnitine; also used as butter preservative. Used in the production of acid and alkali fire extinguishers and foam fire extinguishers in fire fighting equipment. The rubber industry uses it in combination with alum and H pore-forming agents to play the role of uniform pores for rubber and sponge production. The metallurgical industry is used as a flux for casting steel ingots. The machinery industry is used as a molding aid for casting steel (sand blasting) sand molds. The printing and dyeing industry is used as a fixing agent for dyeing and printing, a buffer agent for acid and alkali, and a post-treatment agent for fabric dyeing and finishing. Adding baking soda to the dyeing can prevent the yarn cone from generating color flowers. The pharmaceutical industry is used as a raw material for antacids.
Should be placed in a cool and dry place indoors, avoiding sun and rain.