Leuco Sulphur Brown 16

Preparation

5-Aminonaphthalen-1-ol?and sodium polysulfide calcined at 180 ~ 215 ℃ 43 ~ 45 hours, and the crude product was dissolved in water, and then acid precipitated dye?(BIOS983, 87- 88).

Properties and Applications

dark brown

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Fulling	Persperation Fastness	Soaping
						Moderate	Severe
ISO	4	4	5-6	4	4-5	4-5	3