Acid Red 18 - Ranbar Red SR1610-2 Azo Acid Dyes

Index No.: Acid Red 18

CAS No.: 2611-82-7

EINECS: 220-036-2

Molecular formula: C20H11N2Na3O10S3

Molecular weight: 604.46 g/mol

Chemical type: Azo

Dye type: Acid dyes (anionic dyes)

Solubility: water soluble

Color hue: yellow light red

Physicochemical properties:

Appearance and properties	Deep red powder
Coloring intensity	100±3%
Melting point	＞300℃
Insoluble matter content	0.33%
Water content	3.45%
Fineness (80um sieve residue)	≤5.0%
Solubility (80℃)	≤50g/L
Lightfastness	Grade 4

Product introduction:
Ranbar Red SR1610-2 is a large red azo acid dye easily soluble in water, acid red 18, with a deep red powdered appearance, has a bright yellow-red hue, strong dyeing power, and can give a brilliant color to the fiber.

Ranbar Red SR1610-2 azo dye is red when dissolved in water, slightly soluble in ethanol and solubilizer, insoluble in other organic solvents, it is purple when it meets concentrated sulfuric acid, red-orange when it is diluted, yellow solution when it meets concentrated nitric acid, its aqueous solution is red when it is added with concentrated hydrochloric acid, and brown when it is added with sodium hydroxide solution.

Product Applications:
Ranbar Red SR1610-2 acid dyestuff has good solubility in water, can quickly dissolve to form a uniform dyeing solution, good permeability in the dyeing process, mainly used for dyeing wool, wool yarn, silk, polyamide fiber, and its blended textile, also can be used for dyeing leather, paper, wood, water-based water pen, ink, etc.

Color Model	Index number	Color hue	Characteristics and applications
Rose SR1220-2	Acid Red 52	Blue-Red +1	Acid dyes Anionic dyes Water-soluble dyes Slightly higher sunlight resistance grade Wool Woolen thread Water-based water pen Wood
Big red SR1610-2	Acid Red 18	Yellow-Red, Deep Red
Yellow SR3080-2	Acid Yellow 23	Red-Yellow
Grass green SR4360-2	Mixed	Yellow-Green
Blue SR5030-2	Acid Blue 7	Green-Blue +1
Blue SR5028-2	Acid Blue 9	Green-Blue

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.