noun
ice color; insoluble azo dye
Technical term in dyeing: an azo dye that is developed on the fiber using ice cooling. Also called ice color.
氷染染料は、繊維上で不溶性のアゾ染料を生成するために氷で冷却しながら染色する。
Ice colors are dyed while cooling with ice to form an insoluble azo dye on the fiber.