Acid Black 52

Acid Black 52 is 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.

TRADE NAME:

Acid Black WAN,Acid Black WA,Acid Black WA EX Conc

Key features

• Deep neutral-to-cool black shade with high tinctorial strength
• Good water solubility — easy to prepare and maintain stable dye baths
• Excellent compatibility with common acid-dye auxiliaries and leveling agents
• Typically good wet fastness on polyamide (nylon); moderate to good on wool and silk depending on dyeing conditions
• Low migration in yarns and fabrics when properly leveled
• Fastness and shade reproducibility across batch dyeing with controlled liquor ratio and pH
• Suitable for both exhaust (batch) and continuous acid dyeing processes
• Available in powdered and granular forms for flexible handling and dosing

Application of Acid Black 52:

Used for wool, polyamide, silk dyeing and printing, also used in leather and electrochemical dyeing aluminum shading.

Technical Specifications

• ‍CAS NO: 5610-64-0
• CI.NO: 15177
• Molecular Formula: C20H12N3NaO7S
• Molecular Weight:461.38
• Shade:Black‍