Dyeing using Iron
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Iron as a Dye Modifier & Mordant


  • Iron (ferrous sulphate or iron liquor) is harmful if swallowed.
  • Large amounts of iron salts can damage wool and other animal fibres, wool fibres weaken and deteriorate over time. Iron is best used with cotton and other plant fibres.
  • Wash any dyeing equipment and fibre that comes into contact with iron very well to remove any unattached iron particles. Ideally you should keep a dye pot just for iron as even small amounts of iron salts can cause marked colour changes.

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Last updated on 21 October 2019
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