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Product Name:Acid Black 52 150%
Molecular Structure: Single azo, Metal Complexes 
Molecular Formula:C20H12N3NaO7S
Molecular Weight: 461.38
CAS Registry Number:5610-64-0
Manufacturing Methods : 4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazo, and Naphthalen-2-ol matches, will result in aqueous solution with formic acid chromium common heating, in 115 ℃ keep 2 hours, and then into the same batch of have no complexation half of the dyes, and sodium hydroxide move into alkaline, drying. The component of product is about 2 to 3 Moore single atoms chromium azo dyes.
Properties and Applications: black. Dark brown powder. A red light black soluble in water, soluble in ethanol and soluble fiber element, slightly soluble in acetone, insoluble in other organic solvents. Meet strong sulfuric acid is dark, dilute to create black precipitation; Meet nitric acid was yellow brown solution; In a rare dark-purple sodium hydroxide solution. Used for wool, polyamide, silk dyeing and printing, also used in leather and electrochemical dyeing aluminum shading.
Counter Product:Acid Black MRL,Acid Black WA EX Conc,Neolan Black WA extra,Vitrolan Black WA Extra N
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 6-7 | 4 | 4 | 4-5 | 4 | 4-5 | ||
AATCC | 7 | 3-4 | 3-4 | 4-5 | 3 | 5 | ||
