C.I. Acid Red 116

4-(Phenyldiazenyl)benzenamine diazo, coupled with the 4-Hydroxynaphthalene-1-sulfonic acid. Note: this is a mixture of dyes, it is just one of the components.

red. Soluble in water for product red, and adequate soluble in alcohol in red. The strong sulfuric acid in dark blue, diluted the red light for shallow orange. In water solution to join strong hydrochloric acid have red brown precipitation; Add thick sodium hydroxide solution for purplish red color.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	4	2-3	3-4	2			3-4
AATCC	4	3	3	2			3-4