Direct Yellow 34
Name:C.I.Direct Yellow 34,C.I.29060
Molecular Structure: Double azo class
C.I.Direct Yellow 34,C.I.29060,CAS 6420-33-3,1016.87,C37H28N6Na4O15S4,Direct Fast Yellow 3RL
Molecular Formula:C37H28N6Na4O15S4
Molecular Weight: 1016.87
CAS Registry Number:6420-33-3
Manufacturing Methods : 3-Aminonaphthalene-1,5-disulfonic acid diazo, and 2-Amino-4-methylanisole coupling, and then make the light gasification.
Properties and Applications: red light yellow. Soluble in water for orange. The strong sulfuric acid for blue, blue black after diluted precipitation. The dye solution to join strong hydrochloric acid have blu-ray black precipitation; Add 10% sodium hydroxide solution have yellow precipitation. Used for cellulose fiber dyeing, paper color.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3 | 5 | 6-7 | 2-3 | 3 | ||
| AATCC | 4-5 | 3 | 5 | 3-4 | 3 | ||
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