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 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, 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.
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.
| 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 |
| 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 |
