Name:C.I.Acid Yellow 42,C.I.22910
Molecular Structure: Double azo class
C.I.Acid Yellow 42,C.I.22910,CAS 6375-55-9,758.69,C32H24N8Na2O8S2,Weak Acid Yellow C-R,Weak Acid Yellow R,Weak Acid Yellow MR,Acid Yellow N-CRS,Acid Yellow R
Molecular Formula:C32H24N8Na2O8S2
Molecular Weight: 758.69
CAS Registry Number:6375-55-9
Manufacturing Methods : 2,2′-Disulfo-4,4,diaminobibenzene double nitriding, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one (2 Moore) coupled.
Properties and Applications: yellow to red light yellow. Bright yellow powder. A lemon yellow soluble in water, soluble in ethanol is lemon yellow, slightly soluble in acetone. Meet strong sulfuric acid is lemon yellow, dilute still is shown after lemon yellow. Its water solution meet strong hydrochloric acid is lemon yellow; Sodium hydroxide solution meet strong a lemon yellow. In dyeing of copper (a little red dark, encounter chromium ion unchanged, encounter iron ion turn green dark. Mainly used for wool dyeing and can be used for wool, silk and glue directly printing, has the good discharge sex, can be used for the polyamide fiber dyeing and leather shading.
Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 4-5 | 4-5 | 5 | 4-5 | 4 | 5 | 4 | 5 |
AATCC | 4 | 4-5 | 4-5 | 4-5 | 1 | 2-3 | 4-5 | 4-5 |
