nasajan

Textile Dyestuffs 

C.I.Reactive Orange 12

Molecular Structure: Single azo class

Reactive Golden Yellow K-2RA

Molecular Formula:C₂₁H₁₄ClN₈Na₃O₁₀S₃

Molecular Weight: 739.00

CAS Registry Number:35642-64-9

Manufacturing Methods : 7-Aminonaphthalene-1,3,5-trisulfonic acid diazo, and  N-(3-aminophenyl)acetamide coupling, and 2,4,6-Trichloro-1,3,5-triazinecondensation, and then four and salting-out.

Properties and Applications:  yellow orange. Yellow brown powder. The strong sulfuric acid for brown, diluted into a golden brown; Nitric acid in the red for sauce, diluted into yellow. Add in 1 Moore sodium hydroxide solution, continue to join insurance powder warm, to colorless, add a boric acid sodium is also can’t restore primary colors. 20 ℃ in the solubility of 100 g/L, 50 ℃ when the solubility of 200 g/L. After dyeing color for golden brown. Dye bath of iron ion in, colored light basic unchanged (level 5); Copper ions in that tiny have colored light changes (4 ~ 5 grade). Reactive dyes low, medium tropism, lifting force. Neutral white is 3 classes, alkaline white into four grades. Can be used for cotton, hemp, silk, viscose, nylon fabric dyeing and printing, etc. Roll dye, dyeing, knot dyeing are applicable, can also be used for the cotton or viscose fabric dyed and the direct, the discharge printing.

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