Direct Orange S Name:C.I.Direct?Orange?26,C.I.29150 Molecular Structure:?Double azo class C.I.Direct Orange 26,C.I.29150,CAS 3626-36-6,756.67,C33H22N6Na2O9S2,Direct Orange BS,Direct Orange S,Direct Golden?Yellow?S,Direct Scarlet 2G Molecular Formula:C33H22N6Na2O9S2 Molecular Weight:?756.67 CAS Registry Number:3626-36-6 ? 1.Properties and Applications:?orange to?red?light yellow red colourful. Red?brown?powder. Soluble in water for red orange brown, solubility of 10 g/L (80 ℃), and adequate soluble in alcohol for gold orange. The dye solution to join strong sodium hydroxide solution into orange brown; Add a 10% sodium hydroxide solution become yellow; Join strong hydrochloric acid have red precipitation appear; And 10% sulfuric acid to become red. Is sensitive to that fights. Dyeing cotton or viscose for red orange, can be used for cotton or viscose direct printing, also can be used for silk, wool, Polyvinyl alcohol?and polyamide fiber fabric dyeing, can also be used in leather and pulp dyeing. Exhaust dyeing is very good. Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water Fading Stain Fading Stain ISO 5 4 2-3 1-2 1-2 AATCC 4 5 2 1-2 2 ? 2.International similar brand Direct Orange BS Direct Orange S Direct Golden Yellow S Direct Scarlet 2G Aizen Fast Orange S Atul Direct Fast Orange CS Atul Leather Orange DCS Bitamiiie Direct Orange SE Brilliant Direct Orange Chrochem Direct Orange SE Concorde Direct Fast Orange S Condirec Orange BK

CAS NO:3626-36-6

EC NO:222-838-8

Molecular Formula:C₃₃H₂₂N₆Na₂O₉S₂

Molecular Weight:756.6721

Synonyms:C.I. 29150;C.I. Direct Orange 26;C.I. Direct Orange 26 (VAN);C.I. Direct Orange 26 disodium salt;C.I. Direct Orange 26, disodium salt (8CI);DIRECT ORANG 26;disodium (3E)-4-oxo-7-({[(6E)-5-oxo-6-(2-phenylhydrazinylidene)-7-sulfonato-5,6-dihydronaphthalen-2-yl]carbamoyl}amino)-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2-sulfonate;

Molecular Structure: