Direct Brown 13
Name:C.I.Direct Brown 13,C.I.35710
Molecular Structure: Multi-azo class
C.I.Direct Brown 13,C.I.35710,CAS 8003-82-5,986.88,C45H29N10Na3O9S2
Molecular Formula:C45H29N10Na3O9S2
Molecular Weight: 986.88
CAS Registry Number:8003-82-5
Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, and 2-Hydroxybenzoic acid coupling, and then and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid diazo, and Benzene-1,3-diamine coupled to a product matches.
Properties and Applications: brown. Soluble in water is palm red light, soluble in alcohol. The strong sulfuric acid for purple. The dye solution to join strong hydrochloric acid for red orange solution; With strong sodium hydroxide solution have brown light orange precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 4-5 | 4-5 | 2 | 2-3 | 3 | ||
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