Direct Orange 31
Name:C.I.Direct Orange 31,C.I.23655
Molecular Structure: Double azo class
C.I.Direct Orange 31,C.I.23655,CAS 6420-03-7,670.60,C31H24N6Na2O7S
Molecular Formula:C31H24N6Na2O7S
Molecular Weight: 670.60
CAS Registry Number:6420-03-7
Manufacturing Methods : 3,3′-Dimethylbenzidine double nitriding, respectively with 2-Hydroxybenzoic acid and 4-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling.
Properties and Applications: red light orange. Used for cellulose fiber dyeing, good levelness, white the gender is good.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 4 | 3-4 | 3 | 2-3 | 3 | ||
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