Iron Mordant

Ferrous Sulfate

 4.71 ( 7 review )
Product Details 1+
Iron Mordant $4.49
Iron Mordant - 1 lb. $14.49
Product Details Qty
4 oz.
1 lb.
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Iron is used as a color changer, darkening natural dyes on protein or cellulose fibers and also increases lightfastness for dyes that are prone to fading. Many of the famous black dye recipes from the 17th and 18th century use generous amounts of iron and tannin to produce rich black and gray colors.

This particular iron powder is light green. Too much iron can harshen the hand of protein (silk, wool) fibers, so use sparingly. It can be used either during mordanting or in a post-dye bath. Keep out of reach of children.

Ferrous Sulfate may also be used as the reducing agent in a traditional indigo fermentation vat, often called the Copperas vat. Copperas is an older term for iron or ferrous, and this vat is best suited to cellulose fibers, not for wool or silk. As well, it is possible to create an iron acetate mordant by combining iron and acetic acid. This is another old, traditional recipe.


Average Customer Review
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This stuff is great for changing natural dye colors! Added some to cochineal and got a beautiful silver-black! Added it with calcium carbonate to boiled onion skins and got GREEN.
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6 of 6 users found this review helpful.

Added to a dye bath of Pomegranate and various silk fabrics. Was a little worried when only a tablespoon made the bath black. The wet fabric was also black until it dried into the most beautiful deep olive color. I did also add some Saxon Blue and Himalayan Rhubarb I had left from other dyeing as I was trying to not make a black dye. I don't think the added dyes did anything and the deep olive was mostly due to the Iron with Pomegranate. Have fun and play!
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4 of 4 users found this review helpful.

Works amazing but price is pretty steep. Wish there were a variety of sizes also.
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0 of 3 users found this review helpful.

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0 of 2 users found this review helpful.

Easy to use
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0 of 1 users found this review helpful.

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