Direct Brown 132
Name:C.I.Direct Brown 132,C.I.31505
Molecular Structure: trisazo class
C.I.Direct Brown 132,C.I.31505,CAS 8028-37-3,785.68,C25H22N11Na3O9S3
Molecular Formula:C25H22N11Na3O9S3
Molecular Weight: 785.68
CAS Registry Number:8028-37-3
Manufacturing Methods : N-(3-aminophenyl)formamide diazo, and 3,5-Diamino-4-methylbenzenesulfonic acid coupling, hydrolysis amino acylation, product double nitriding, and 90% Benzene-1,3-diamine and 10% 2,4-Diaminobenzenesulfonic acid (2 Moore) coupled.
Properties and Applications: red light brown. Soluble in water for orange brown, soluble in ethanol for red orange brown, soluble in soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid in dark green light for blue, dilute for yellow brown after; In nitric acid in red for brown; In 10% of black light brown for sulfuric acid. The dye solution to join strong hydrochloric acid have orange brown precipitation; Add thick sodium hydroxide solution have orange brown precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3 | 5 | 2 | 3 | 3 | ||
| AATCC | 5 | 3 | 1-2 | 2-3 | 4-5 | ||
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