ingredient information
Sodium Carbonate
Sodium carbonate (also known as washing soda, soda crystals or soda ash), Na2CO3, is a sodium salt of carbonic acid. It most commonly occurs as a crystalline heptahydrate, which readily effloresces to form a white powder, the monohydrate; and is domestically well known for its everyday use as a water softener. It has a cooling alkaline taste, and can be extracted from the ashes of many plants. It is synthetically produced in large quantities from table salt in a process known as the Solvay process. Sodium carbonate is a food additive (E500) used as an acidity regulator, anti-caking agent, raising agent and stabilizer. It is one of the components of kansui, a solution of alkaline salts used to give ramen noodles their characteristic flavor and texture.[4][5] Sodium carbonate is also used in the production of sherbet powder. The cooling and fizzing sensation results from the endothermic reaction between sodium carbonate and a weak acid, commonly citric acid, releasing carbon dioxide gas, which occurs when the sherbet is moistened by saliva. Sodium carbonate is used by the brick industry as a wetting agent to reduce the amount of water needed to extrude the clay.[citation needed] In casting, it is referred to as "bonding agent" and is used to allow wet alginate to adhere to gelled alginate.[6] Sodium carbonate is used to encapsulate and kill mold. When mixed with water and put in a spray bottle, it is sold for its anti-mold cleaning ability. It is also used to blast off mold from wood or other materials.[citation needed] Sodium carbonate is used in toothpastes, where it acts as a foaming agent, an abrasive, and to temporarily increase mouth pH. The crystalline form of washing soda can be used to induce vomiting in dogs. A tablespoon for large breeds is sufficient to force the animal to empty the contents of its stomach.[citation needed] Sodium carbonate may be used for safely cleaning silver. First, aluminium foil is added to a glass or ceramic container, and covered with very hot water and some sodium carbonate. Silver items are dipped into this "bath" to clean them, making sure the silver makes contact with the aluminium foil. Finally, the silver is rinsed in water and let to dry