Soda ash (sodium carbonate, sodium carbonate, Natrium carbonicum, Na2CO3) - average sodium salt of carbonic acid. Water solutions of soda ash have alkaline reaction. Soda ash is widely used in engineering, in laboratories and in everyday life, is part of detergents and cleansers. With long-term solutions soda, especially hot and concentrated, possible eczema, dermatitis, skin ulceration, quickly sleepaway by avoiding contacts with these solutions. Inhalation of dust soda can cause respiratory tract irritation, ulceration of the mucous membrane of the nose, conjunctivitis. To prevent these lesions should be used when working protective masks (for example, from cotton and gauze).
Food soda (drinking) (sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, Natrium bicarbonicum - formula NaHCO3) acid sodium salt of carbonic acid. Water solutions of soda are slightly alkaline reaction and is used for washing parts of the body, burned with acid to neutralize excess hydrochloric acid in the gastric juice in the case of heartburn, to rinse throat and other sodium Bicarbonate is part of a number of medicines. Drinking soda is widely used for baking bread and confectionery products as a means of loosening the dough.
Caustic soda - see Caustic soda.