dye|World dye variety

Name:C.I.Direct Yellow 7,C.I.49010

Molecular Structure: Benzothiazole class

C.I.Direct Yellow 7,C.I.49010,CAS 12262-60-1,475.54,C21H14N3NaO3S3

Molecular Formula:C₂₁H₁₄N₃NaO₃S₃

Molecular Weight: 475.54

CAS Registry Number:12262-60-1

Manufacturing Methods : (a) primrose spirit alkali (C.I.Direct Yellow 59, C.I. 49000) methylation, then will be preparing sulphonated product (GP 1251738); (b) primrose spirit alkali stlfonation, then will product methylation (GP 53333).

Properties and Applications: green light yellow. For golden is soluble in water, but soluble in ethanol as a green fluorescent yellow. The strong sulfuric acid in nearly colorless, with blue fluorescence, after diluted orange yellow precipitation. Used for cellulose fiber, wool, silk dyeing, silk printing, also can be used for leather color. Exhaust dyeing, good levelness.

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