Washing Soda (Sodium Carbonate) | ONLINE REFILL

Historically, it was extracted from the ashes of plants grown in sodium-rich soils, and because the ashes of these sodium-rich plants were noticeably different from ashes of wood (once used to produce potash), sodium carbonate became known as "soda ash". 

Some common applications of sodium carbonate include:

• a component of many dry soap powders
• lowering the hardness of water
• glass-, soap-, and paper-making