C.I. Sulphur Black 9

Preparation

4-(2,4-Dinitrophenylamino)phenol of cold water suspension added to 95 ℃ of Sodium polysulfide solution when the reduction reaction is completed, in 114 ~ 115 ℃ reflux heating, then diluted, injection Ferrous chloride solution, and drum drying the mixture (FIAT 764)

Properties and Applications

blue black. In the Sodium sulfide solution for blue black

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