MORDANT MONDAY: Does Alum Acetate Have a Shelf Life?

We get mordant questions all the time at Botanical Colors so why not create Mordant Monday??? Got mordanting questions? Email [email protected] YOU ASKED: I have some alumimum acetate mordant that is 18 months old. It is kept in a plastic container inside a freezer plastic bag. I heard it has a short life. How do I know when it is not worth using? KATHY ANSWERED: I have also heard that aluminum acetate has a short shelf life but I asked our supplier and they were unaware of this issue and have never provided us with a “best by” usage date. … Read more