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

Ranbar Red SR1610-2, Acid Red 18, is a water-soluble acid azo dye. It appears as a dark red powder with a bright yellow-red hue, exhibiting strong dyeing power to impart vibrant colors to fibers.

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Ranbar Red SR1610-2 Acid Azo Dyes

 

  • Color Index: 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-Red

 

Physicochemical properties:

Appearance and propertiesDeep red powder
Coloring intensity100±3%
Melting point>300℃
Insoluble matter content0.33%
Water content3.45%
Fineness (80um sieve residue)≤5.0%
Solubility (80℃)≤50g/L
LightfastnessGrade 4

 

Ranbar Acid Red 18 Acid Dyes Powder

 

Product introduction:

Ranbar Red SR1610-2, Acid Red 18, is a water-soluble acid azo dye. It appears as a dark red powder with a bright yellow-red hue, exhibiting strong dyeing power to impart vibrant colors to fibers.

Ranbar Red SR1610-2 dissolves in water to form a red solution and is slightly soluble in ethanol and cellulose acetate but insoluble in other organic solvents. In concentrated sulfuric acid, it turns purple and changes to a red-orange color upon dilution. When exposed to concentrated nitric acid, it produces a yellow solution, and its aqueous solution turns red when treated with concentrated hydrochloric acid and brown when mixed with sodium hydroxide solution.

 

Product Applications:
The Ranbar SR1610-2, Acid Red 18 dye, exhibits excellent solubility in water, readily dissolving to form a uniform dye solution. It demonstrates good penetration during the dyeing process and is primarily employed for the coloring of wool, woolen yarn, silk, polyamide fibers, and their blends. Additionally, it finds application in the dyeing of leather, paper, wood, water-based markers, and ink.

 

Ranbar Red SR1610-2 Acid Azo Dyes Powder and Aqueous Solution Photos

 

Color ModelIndex numberColor hueCharacteristics and applications
Rose SR1220-2Acid Red 52Blue-Red +1Acid dyes
Anionic dyes
Water-soluble dyes
Slightly higher sunlight resistance grade

Wool
Woolen thread
Water-based water pen
Wood

Big red SR1610-2Acid Red 18
Yellow-Red, Deep Red
Yellow SR3080-2Acid Yellow 23Red-Yellow
Grass green SR4360-2MixedYellow-Green
Blue SR5030-2Acid Blue 7Green-Blue +1
Blue SR5028-2Acid Blue 9Green-Blue

 

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