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
Standard | Fiber | Soaping | Persperation Fastness | Oxygen bleaching | Light | |
Fading | Stain | |||||
AATCC | Wool | 3-4 | 3-4 | 4-5 | 3 | 7 |
ISO | Wool | 4 | 4 | 4-5 | 4 | 6-7 |
Acid Black 52 Used for wool, polyamide, silk dyeing and printing, also used in leather and electrochemical dyeing aluminum shading.
Typical dyebath: acidic pH (about 2.5–5), gradual heating to 60–95°C depending on fiber, and use of common acid-dye leveling agents; follow mill-scale trials for exact recipes.
It provides good wet-fastness for apparel; lightfastness is moderate—improve with after-treatments or suitable mordanting for demanding end-uses.
Store dry and avoid dust inhalation. Use standard PPE, capture dye effluent and treat per local regulations—acid dyes are soluble and should not be discharged untreated.
