Mordants

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Alum ALUM ( Potassium aluminum sulfate ): Crystalline white acid mordant circa 7800 BC in the Mid-East. Best on wool, silk, mohair. Rinse thoroughly to... $2.50 Add: 0.25	Ammonium Sulfate AMMONIUM SULFATE: White crystalline powder mordant; forms mild acid as it heats. Good cotton mordant, lowers pH of dyepot, evens dye color on fiber.... $3.00 Add: 0.375	Bran BRAN (Grain husk): Natural dye modifier; small red-brown flakes used to ferment for madder and indigo vats. In use since humans discovered the... $2.00 Add: 0.375

Calcium Carbonate CALCIUM CARBONATE (Chalk): White opaque finely pulverized limestone dye modifier; used for dyeing in 30 BC Rome; neutralizes acidic bath without... $2.00 Add: 0.25	Copper COPPER ( Cupric sulfate pentahydrate ): Blue crystalline powder dye mordant circa 4000-3000 BC in Egypt, at least 1 AD in the New World. Good... $2.50 Add: 0.25	Cream of Tartar CREAM of TARTAR ( Potassium bitartrate ): White crystalline powder dye modifier used by English dyers circa 1500; by New World dyes circa 1630 AD,... $2.00 Add: 0.25

Glauber's Salt GLAUBER'S SALT ( Sodium sulfate anhydrous ): White coarse powder dye modifier, leveling agent, isolated as a chemical in 1625 AD. Enhances turquoise... $2.00 Add: 0.25	Iron IRON ( Ferrous sulfate heptahydrate ): Pale green coarse powder, mordant and post-mordant circa 6000 BC; saddens colors. Also a light gold to brown... $2.00 Add: 0.25	Iron Liquor Kit IRON LIQUOR KIT: Fun gift for any artisan! Great to show kids how pioneers created their own mordant! You supply vinegar and water. Kit contains 4 oz... $15.00 Add: 1