Soda is the collective name for several forms of sodium carbonate, have weigh of molecule 106. The most commercially important form is the dehydrated product soda ash (Na 2 CO 3 ). The decahydrate (Na 2 CO 3 .10 H 2 O) is also known as washing soda or sal soda. Soda ash is so called because it was once extracted from plant ashes; now almost all is manufactured by the Solvay or ammonia soda process. The primary users of soda are the glass and chemical industries. Sodium carbonate occurs in nature in combination with the bicarbonate as trona and is recovered from evaporated lakes in California. Baking soda (sodium bicarbonate, NaHCO 3 ) is used as an effervescent agent in foods, cake soda and as a cleanser. Sodium carbonate have many applied use in Soap making . In commercial sodium carbonate is mining product. Some production of sodium bicarbonate also as a side product so if this chemicals is produce deliberately will unable to compete the price. Baking soda may just modified from