Aluminum Sulfate



Product Description

This is the mordant to use for protein fibers such as silk and wool. Alum is refined from bauxite and is a transparent crystal, resembling salt. We supply a food grade alum that is free of iron and other impurities.

You can use between 10-20% alum on the weight of fiber.  100 grams will mordant about  500 grams of fiber at 20%