Copper sulphate is the copper mordant refered to in ancient dye books. It is used as a mordant or modifier to shift colors.
Content: Copper Sulphate
Storage: Store in dry, cool place away from light.
Caution: Chemicals act as irritant and is toxic in varying quantities. Please refer to MSDS supplied along with this product to understand safe usage. Store safely and away from pets and children. Use responsibly, do not throw out the mordant bath but re-use by replenishing as required
For your study of natural colors on fabric: WILD COLORby Jenny Dean is a marvelous book to kick start one's study of natural dye techniques and color palettes. BRILLIANT COLOURS by Cheryl Kolander, doyen of natural dyeing, is another book of interest if one is interested in developing a very personal connection with natural colors. Hers is the very first book I read on natural colors and it carried me away on her tales of color to a fairytale land. Colors talk to her, and it is fascinating to listen in.
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