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#salt and soda ash

Articles about salt and soda ash from the Abdohoo.App Solutions blog and help centre.

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Shadecard recipe calculator showing salt 50 g/L and soda ash 15 g/L, and a result of 100 g salt and 30 g soda ash for a 2 litre bath
Textile & colour Shadecard

Reactive dyeing basics: why salt and soda ash (and how to stay safe)

In reactive dyeing of cotton, salt pushes the dye onto the fibre (exhaustion) and soda ash raises the pH so the dye bonds to it (fixation). Unfixed dye must be washed off.

5 min read
Recipes & the dyeing calculator Shadecard

Use the recipe calculator: grams, stock solution or pad liquor

Enter fabric weight, depth (% owf), water ratio and the Y:R:B ratio. Pick Weigh (g), Stock (mL) or Pad (g/L); the calculator gives each dye plus bath volume, salt and soda.

4 min read