Aluminium Triformate is a room temperature mordant for both cellulose and protein fibres. part of the alum family, it is a more recent addition of mordanting options for the natural dyer, gaining popularity (particularly with wool dyers due to its temperature requirements) for its low-impact process (water & energy saving). It produces similar results to that of alum acetate, and can be used with a pre-tannin bath to help improve dye fastness. use at 5-10% WOF.

Alum Triformate is considered non-toxic, but working in a ventilated area and wearing a mask and gloves is best practice whilst handling this powder. I recommend keeping any tools used for this process separate from kitchen tools. Alum Triformate may be safely disposed of in a municipal water system by pouring down the drain.

this material comes in a natural biodegradable cellophane. We recommend transferring this to a glass or plastic jar for long-term storage.