Direct Dye | Direct Black 19 | Ranbar Black SR0080-3 Water Soluble Dye

Index number: Direct black 19

CAS Registry Number: 6428-31-5

EINECS No.: 229-208-1

Molecular formula: C34H27N13Na2O7S2

Molecular weight: 839.77

Chemical structure: Double azo class

Dye type: Direct dyes

Solubility: easily soluble in water

Color hue: green-phase black

Physicochemical properties:

Appearance and properties	Black powder
Coloring intensity	100±3%
Solubility (80℃)	60g/L
Insoluble matter content	0.36%
Water content	3.75%
Fineness (180-micron sieve residue)	≤5.0%
Lightfastness	5-6 grade

Product introduction:
Ranbar Black SR0080-3 is a green phase black bisazo water-soluble direct dye, C.I. Direct Black 19, with a black powder appearance, high concentration, good dyeing rate, good solubility, leveling, and light fastness.

Ranbar Black SR0080-3 direct dye is easily soluble in water, slightly soluble in ethanol and acetone, soluble in water and shows a green phase black, slightly red when adding 10% sulfuric acid in aqueous solution, green phase light blue when adding concentrated alkali solution; It appears dark brown in concentrated nitric acid, green black in concentrated sulfuric acid, and produces red black precipitates when diluted.

Product application:
When dyeing with water-soluble direct dye Ranbar Black SR0080-3, the color light of copper ions is slightly green, while the color light of iron ions changes slightly. It can be used in combination with brown dyes to form various shades of coffee and other colors. It is mainly used for dyeing and printing of cotton, viscose fibers, silk, wool, and cotton or viscose fiber interwoven or blended fabrics, as well as for dyeing leather, paper, and other fabrics.

Tip: Due to the difference in filming equipment and light angle, the color shown will have a slight error, the color is for reference only, and the actual application of the product to show the effect shall prevail.