Vat Orange 11 is Yellow powder. Slightly soluble in 2-Chlorophenol and Pyridine , insoluble in Etanol, Acetone, Chloroform and Toluene. The strong sulfuric acid to red light brown, dilute light yellow brown after precipitation. Alkaline reduction for dark red light body hidden color brown; Acid reduction for yellow color body hidden. The light is fragile.
Vat Orange 11(Vat Yellow 3RT) appearance is generally yellow powder. It is insoluble in water, alcohol, acetone, chloroform and toluene; slightly soluble in o-chlorophenol and pyridine. It is reddish brown in concentrated sulfuric acid and has a brownish yellow precipitate after dilution. The dye is in alkaline powder solution. The resulting leuco body is dark reddish brown, and the acid powder solution is dark yellow.
Vat Yellow 3RT,Vat Orange 3RT,Cibanon Yellow 3R
It is Mainly used for dyeing cotton roll and dip, the affinity of cotton cloth is good and the levelness of death and the covering power of cotton are good. Can to cotton direct printing. with Villeneuve shade of Pale, coloured silk high affinity, good fastness. Besides using background color outside, a small amount used to spell color. Sometimes also used for paper dyeing.
Vat Orange 11 should be stored in a dry, ventilated place to avoid moisture
Dyeing depth g/L | 20 |
Dyeing method | IN IW |
Leuco color | Brown(Y) |
Leveling property | ▲▲ |
Dead cotton | ▲ |
Light (Xenon test 1/12) | 6 |
Light (Xenon test 1/1) | 7 |
Light (Xenon test 2/1) | 7 |
Dyeing Method | Dyeing Temperature(℃) | Reduction Method | Reduction temperature(℃) | Leveling Property | Other properties |
most suitable method B, also used method of A and C | 40~50,MAX90 | Dry Cylinder | 50 | Good | — |
Light Fastness | Soapping(95℃) | Perspiration | Rubing | Ironing | Bleaching resistant | Mecerized | |||||||
standard depth | 1/12 depth | orginal color changed | white fabric stained | orginal color changed | white fabric stained | Dry | wet | Immediatly | 4hafter | Chlorine bleaching | Oxygen bleaching | Orginal color chagned | white fabric stained |
6~7 | 6 | 5 | 5 | 4~5 | 4~5 | 4~5 | 4 | 3 | 5 | 4~5 | 4~5 | 5 | 5 |
Vat Orange 11 is applied by reducing the dye to its soluble leuco form (commonly with a sodium hydrosulfite/caustic system), exhausting or padding the reduced solution onto the fiber, and then oxidizing it back to the insoluble vat form on the fabric. The process produces strong, wash-resistant shades when reduction/oxidation are well controlled.
Vat Orange 11 is optimized for cellulose fibers such as cotton, rayon and viscose. Recommended processes include package/yarn dyeing, pad-batch (pad-steam or pad-batch), and vat printing. It can also be used in blend shading where vat dyes are standard.
Compared with direct and many reactive oranges, Vat Orange 11 delivers superior wet and light fastness because it becomes insoluble on the fiber after oxidation. Reactive dyes give bright initial shades and easy application but typically have lower wet-fastness; direct dyes are simpler but less durable in heavy-use textiles.
Yes. Vat Orange 11 blends well with other vat dyes for shade tuning, but compatibility and final fastness depend on the partner dye’s properties. Conduct lab trials for dye balance and oxidation behavior before scaling to production.
Vat dyeing involves reducing agents and alkali; treat machine effluent to remove sulfite/sulfide residues and adjust pH before discharge. Consider closed-loop water systems and appropriate biological/chemical treatments to minimize environmental impact.
