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Here are some key points about food-grade sodium bicarbonate (baking soda):

• Sodium bicarbonate (NaHCO3) is a chemical compound that is commonly used as a food additive and leavening agent. The food-grade version is safe for human consumption.
• It is a white, crystalline solid that is slightly basic in nature, with a pH around 8-9. This makes it useful for neutralizing acids.
• Food-grade sodium bicarbonate is commonly used in baking as a leavening agent. When heated, it releases carbon dioxide gas which causes baked goods to rise.
• It is also used as an antacid, cleaning agent, and deodorizer. In food, it can be used to control pH, as a leavening agent, and as an emulsifier or stabilizer.
• The food-grade version must meet strict purity and safety standards set by regulatory bodies like the FDA in the United States. It undergoes testing to ensure it is free of contaminants.
• Typical food-grade sodium bicarbonate has a purity of 99-100%. It is generally recognized as safe (GRAS) for use in foods when used in accordance with good manufacturing practices.
• When purchasing sodium bicarbonate for food use, it’s important to ensure you are getting the food-grade variety, not the industrial grade which may contain impurities.