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Direct Orange 73

Name:C.I.Direct Orange 73,C.I.25200

Molecular Structure: Double azo class

C.I.Direct Orange 73,C.I.25200,CAS 6391-21-5,731.59,C33H23N11Na2O7,Sandal Direct Orange RS

C.I.Direct Orange 73,C.I.25200,CAS 6391-21-5,731.59,C33H23N11Na2O7,Sandal Direct Orange RS

Molecular Formula:C33H23N11Na2O7

Molecular Weight: 731.59

CAS Registry Number:6391-21-5

Manufacturing Methods : 3-Aminophenyl 3-aminobenzoate double nitriding, and 1-(3-Nitrophenyl)-3-carboxy-5-pyrazolone (2 Moore) coupling, and then will the nitro reduction.

Properties and Applications: red light orange. Soluble in water for golden brown, slightly soluble in soluble fiber element, soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for green light yellow, with golden yellow diluted. Dye with strong hydrochloric acid solution for golden brown, precipitation; Add thick sodium hydroxide solution for green light yellow. Used for cellulose fiber dyeing, 80 ℃ maximum dyeing affinity. Exhaust dyeing good, also can be used for leather color.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4-5 4 1-2 4 4-5
AATCC 5 5 1-2 4-5 5

List of Suppliers:

Sandal Direct Orange RS[( Sandal Dyestuff Industries (Pvt) Ltd )


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