Direct Violet 48
Name:C.I.Direct Violet 48,C.I.29125
Molecular Structure: Double azo class
C.I.Direct Violet 48,C.I.29125,CAS 37279-54-2,931.86,C34H27N7Na2O14S4,Direct Violet 4BL,Direct Violet B
Molecular Formula:C34H27N7Na2O14S4
Molecular Weight: 931.86
CAS Registry Number:37279-54-2
Manufacturing Methods : 3-Amino-4-hydroxy-N-methylbenzenesulfonamide (2 Moore) diazo, and Bis(4-hydroxy-2-sulfonaphthalene-7-yl)amine coupling, and then use the ammonia containing copper sulfate solution processing, make it a double copper complex.
Properties and Applications: blue purple. Dark purple powder. Soluble in water solution for purple, soluble in ethanol for red light purple, insoluble in other organic solvents. The strong sulfuric acid dyes for black light purple, diluted into red wine. The dye solution to join strong hydrochloric acid into Claret, precipitation; Add thick sodium hydroxide solution still for purple, have precipitation. Water-soluble general, acid, alkali and sensitive fights. In dyeing copper and iron ion colored light basic unchanged. Used for cotton, viscose, silk dyeing and printing, also can be used for leather and paper shading, its heavy metal salt can be used as organic pigments.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3-4 | 4 | 6 | 3 | 2-3 | ||
| AATCC | 4-5 | 5 | 5 | 1 | 3 | ||
List of Suppliers:
ABCOL Fast Violet4BL ( Abbey Color Inc. )
ACDI Violet 4BL 200%(Aakash Chemicals & Dyestuffs Inc)
Direct Violet 4BL( Global Colors Inc. )
Direct Violet 4BL (Classic Dyestuffs Inc)
Direct Violet B (Sinochem Ningbo Imp & Exp Corp)
Dyrite Violet 4BL ( Rite Industries Inc. )
Dyrite Violet 4BL (Classic Dyestuffs Inc)
Simrect Violet 24883(Simpsons (UK) Ltd)
Triamin Violet BL(Chemische Fabriek Triade BV)