Definition: Soda ash is sodium carbonate used in dying techniques to increase the pH of the dye.
Use soda ash to increase the permanence of the dye and give more vibrant results. Look for soda ash labeled as sodium carbonate in the swimming pool isle at the hardware store. ‘pH Up’ is a popular brand. Tie Dye and other dye project directions will tell you how much to use.
Also Known As: Sodium carbonate
'pH UP', a common name-brand soda ash.
