Iron | Ferrous Sulphate

Iron | Ferrous Sulphate

Iron | Ferrous Sulphate

Iron Sulphate, also known as Ferrous Sulphate, is a traditional mordant and colour modifier used to darken and “sadden” natural dyes. It’s often used to achieve greys, blacks, and muted earthy tones or to strengthen the lightfastness of natural dye colours.

Kraftkolour’s Iron Mordant is finely milled for easy dissolving and consistent results. It’s suitable for use on all natural fibres but should be used carefully on delicate fabrics like silk or wool to prevent over-hardening.

Benefits

Iron is essential for adding drama and character to your natural dye palette. It’s perfect for achieving vintage, rustic, or weathered finishes in fibre and fabric art.

Ideal Applications:

  • Over-dyeing and natural colour modification
  • Wool, silk, cotton, and linen projects needing muted tones
  • Textile studios, artisans, and botanical workshops
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SIZE
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  • Pure ferrous sulphate mordant for colour deepening
  • Enhances wash and lightfastness of natural dyes
  • Produces greys, charcoals, and aged tones
  • Use 1–2% of fabric weight for post-mordant or modifier baths
  • Wear gloves and avoid metal contact with solution

Always pre-test to control darkness level. Use sparingly to avoid fibre stiffness. Neutralise after use and dispose responsibly.

Resources

Natural Dyes and Mordanting Instructions

Online orders are sent using Australia Post during business hours Monday to Friday. Orders are usually sent 1-2 days after your order is placed or when a pre-ordered item arrives. We email shipping confirmation with tracking information when your order is dispatched.

Shipping : Australia

Shipping is calculated at checkout according to the weight of the order, and your address location.

Most orders will have the option of:

  • Australia Post Standard Shipping (estimated delivery in 3-5 days)
  • Australia Post Express Shipping (estimated delivery in 2-3 days)

Kraftkolour cannot guarantee expected delivery times.

Kraftkolour may use other carriers from time to time for bulky or heavy shipments.

Shipping : International

We currently ship outside Australia to many countries using Australia Post’s International Express service. Rates will be automatically calculated at checkout.

Click & Collect : Thomastown

When ordering online you can choose 'Click & Collect' for order collection at our premises at 2/99 Heyington Ave, Thomastown, Victoria. We will email you confirming when your order is ready to collect.

Orders can be collected 10am 4pm Monday to Friday and we would appreciate it if you could collect your order within a week.

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