Sodium carbonate (soda ash)

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Sodium carbonate is used in dyeing for the following purposes:

  • Scouring cotton and cellulose fibres
  • As a fixer for cellulose (plant) fibres and silk with fibre reactive (procion mx) dyes
  • As an alkaline colour modifier in natural dyeing
  • As an alkali in the indigo and woad (vat dyeing) process

 

Sodium carbonate is also referred to as soda ash and is similar to washing soda crystals.