Direct Orange 70
Name:C.I.Direct Orange 70,C.I.40245
Molecular Structure: Stilbenes
C.I.Direct Orange 70,C.I.40245,CAS 1325-60-6
Molecular Formula:
Molecular Weight:
CAS Registry Number:1325-60-6
Manufacturing Methods : in reflux conditions, sodium hydroxide solution in (E)-2-(2-sulfo-4-nitrostyryl)-5-nitrobenzenesulfonic acid with 3-Aminobenzenesulfonic acid sodium diazotization and O-Anisidine coupled with heating products.
Properties and Applications: dark red light orange. Soluble in water and ethanol, insoluble in acetone. The strong sulfuric acid as dark blue in green; In the dark of nitric acid blue purple; In strong hydrochloric acid for dark red jujube; In sodium hypochlorite solution for dark red.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3-4 | 5 | 6-7 | 4 | 3 | ||
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