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Acid Yellow 33

Name:C.I.Acid Yellow 33,C.I.13115

Molecular Structure: Single azo class

C.I.Acid Yellow 33,C.I.13115,CAS 8015-08-5,499.43,C22H14N5NaO6S,Silk Yellow R

C.I.Acid Yellow 33,C.I.13115,CAS 8015-08-5,499.43,C22H14N5NaO6S,Silk Yellow R

Molecular Formula:C22H14N5NaO6S

Molecular Weight: 499.43

CAS Registry Number:8015-08-5

Manufacturing Methods :  6-Aminonaphthalene-1-sulfonic acid diazo, with Diphenylamine coupling, then use the sodium nitrate processing, generation N-and the nitro derivatives, and then to nitration (also used a mixture of 6-Aminonaphthalene-1-sulfonic acid and 8-Aminonaphthalene-1-sulfonic acid in place of 6-Aminonaphthalene-1-sulfonic acid).

Properties and Applications: red light yellow. Used for wool, silk, vinegar fiber dyeing. Tannin mordant dyeing can improve the wet process fastness.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 2 2 1-2 2 2 2

List of Suppliers:

Silk Yellow R( IG Farbenindustrie AG )


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