Vat Black 1
Name:C.I.Vat Black 1,C.I.73670
Molecular Structure: Thioindigo class
C.I.Vat Black 1,C.I.73670,CAS 3687-67-0,442.71,C20H9BrClNO2S,Vat Black BL
Molecular Formula:C20H9BrClNO2S
Molecular Weight: 442.71
CAS Registry Number:3687-67-0
Manufacturing Methods : 9-Chloronaphtho[1,2-b]thiophen-3(2H)-one with 5-Bromo-2-chloro-3H-indol-3-one condensation.
Properties and Applications: blue light grey to blue black. Black powder. Not soluble in organic solvent. In concentrated sulfuric acid for olive, dilution after black precipitation; In concentrated nitric acid for black. Alkaline reduction leuco for gold; Acid reduction leuco for pale yellow. Mainly used for cotton fabric printing, also can be used for silk and wool dyeing. When dyed cotton commonly used in dyeing light color; When printing is suitable for direct printing, dyeing of wool when good affinity.
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 4-5 | 5 | 6-7 | 4-5 | 4 | 4-5 | 5 |
| AATCC | 4 | 5 | 6 | 4 | |||
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