Direct Violet 9 is Blue purple,Soluble in water for red light purple, soluble in soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. The strong sulfuric acid for blue-ray green, purple precipitation after diluted; In nitric acid solution for the red light in brown. The dye solution to the strong hydrochloric acid has the purple precipitation;
TRADE NAME:Direct Fast Violet BK,Direct Fast Violet MB,Direct Brilliant Violet C,Atlantic Brilliant Violet B,Benzo Brilliant Violet 5B,BrilliantBenzo Violet BA-CF,Brilliant Paper Violet 2BP,Calcomine Brilliant Violet B,Chloramine Brilliant Violet B,DiaphtamineBrilliant Violet B,Diazol Brilliant Violet B,Diphenyl Brilliant Violet DB
| Dyeing depth % | 2 |
| Insolubles % | 0.15 |
| Light Fastness | 2 |
| Washing Fatness | 1-2 |
| Rubbing fastness(dry) | 4 |
| Rubbing fastness(wet) | 3 |
Wet fastness improves after a mild aftertreatment: scouring to remove loose dye, followed by alkaline fixation or a commercial cationic fixing agent. Avoid harsh oxidative treatments which can alter shade. Trial small batches to optimize fixation dosage and conditions for your substrate.
Typical auxiliaries include levellers for evenness, sequestering agents to control metal ions, wetting agents for penetration, and anti-foam as needed. When pad dyeing, use padding thickeners suited to direct dyes. Always check for compatibility in pilot trials.
Direct Violet 9 can be formulated into print pastes for direct printing on cellulosics, but paste rheology and fixation method must be optimized. Steam fixation or reactive aftertreatment may be required to lock shade and improve wash-fastness compared with plain exhaust dyeing.
As with all dyes, handle with appropriate PPE (gloves, eye protection). Minimize dye liquor discharge by optimizing bath exhaustion and implement wastewater treatment tailored for dye removal (adsorption, coagulation or biological treatment). Consult the product MSDS for specific hazard and disposal instructions.
Yes — it blends well with other direct dyes of similar substantivity to adjust hue and chroma. When blending, match dye types for comparable migration characteristics; perform small mixing trials to confirm final shade and fastness before bulk production.
Add thick sodium hydroxide solution has the purple sediment: cotton, viscose, silk dyeing and printing, also can be used for paper color, can also be used in leather color.
