Assertion: dye | /r/Desires | a mordant
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Dyes usually required a mordant to keep the color from fading, and mordants often left a crystalline residue that made working with fibers extremely difficult.
text: The dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber.