Reactive Yellow 3 Chemical Properties

Density 

1.81

pka

-0.71±0.40(Predicted)

EPA Substance Registry System

1,5-Naphthalenedisulfonic acid, 3-[[2-(acetylamino)-4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]phenyl]azo]- (6539-67-9)

Reactive Yellow 3 Usage And Synthesis

Chemical Properties

Yellow powder. Solubility in water (50 ℃) is 40g / L. The aqueous solution is yellow, add 1mol / L sodium hydroxide to turn slightly darker and red, followed by the addition of insurance powder and warm colorless, then add sodium perborate can not be restored to the original color. In concentrated sulfuric acid is vermilion, diluted to yellow. In concentrated nitric acid, it is purplish red, and after dilution, it turns yellow.

Uses

Reactive Yellow 3 is a pigment used in the colourization of plastics. Reactive Yellow 3 degrades under UV light.

Preparation

3-Aminonaphthalene-1,5-disulfonic acid diazo, and ?N-(3-aminophenyl)acetamide hydrochloride coupling, and then and 2,4,6-Trichloro-1,3,5-triazine condensation, and four.

Properties and Applications

red light yellow. Deep yellow evenly powder, soluble in water for yellow, in the water solubility of 15 g/L (50 ℃). Used for cotton, linen, silk, viscose, rayon and polyamide fiber dyeing and printing.

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