Sodium carbonate is similar in chemical formula to baking soda but is more basic, which makes it caustic and potentially harmful if swallowed. It is used widely as a cleaning agent. It is known as "washing soda" or "soda ash" and helps laundry detergents lather more effectively, particularly when the water is hard (high mineral content). It is sold in powder form and you can use it to make Suzanne's simple laundry powder (see recipe in pictures).
Ingredient: Sodium carbonate
Price per kg: $4.90
Sold in units of 750 ml - or one full jar - as shown in our product picture. Product is measured, transferred to a compostable brown paper bag tied with an elastic rubber band, and labelled. Net weight is approximately 740 g.