Vat Voilet 3

Chemical Properties

Reddish purple powder. Insoluble in water, ethanol and organic solvents. Dark green in concentrated sulfuric acid, reddish purple when diluted. Yellow in alkaline solution of insurance powder, colorless in acidic solution.

Uses

Vat Voilet 3 has similar performance characteristics to Vat Red Violet (RH) (CI73385) and is a light-brittle dye. It is mainly used for dyeing cotton fibers and printing on cotton fabrics, exhibiting good affinity and leveling properties. It also provides good leveling and affinity when used for dyeing silk. It is also suitable for dyeing wool, nylon, and vinylon. It can be blended with bromoindigo and vat brown (RRD) to dye black, and can also be blended with vat bright pink (R), orange (RF), and scarlet (GGN).

Preparation

2,5-Dimethyl-4-chlorophenylmercaptoacetic acid with Chlorosulfonic acid cyclization, oxidation. This intermediate is chlorinated using the sulfonyl chloride route xylene (BIOS) derived.

Properties and Applications

brilliant red light purple. Red purple powder. Insoluble in water, ethanol and general organic solvent. In concentrated sulfuric acid for SAP green, dilution after pale red light purple. Alkaline reduction leuco for yellow; Acid reduction leuco colorless. This product is light embrittlement phenomenon.Mainly used in cotton yarn dyeing indigo with bromine, etc. Tile Black Vat Brown RRD use. Rubbing fastness, but also for direct printing of cotton fabrics, resist printing and discharge printing.

Standard	Ironing Fastness	Chlorine bleach	Light Fastness	Mercerized	Oxygen bleach	Soaping
						Fading	Stain
ISO	4	5	5	3	4	4-5	5
AATCC	5	5	5	3-4	4