Vat Blue 31
Name:C.I.Vat Blue 31,C.I.67105
Molecular Structure: anthraquinones
C.I.Vat Blue 31,C.I.67105,CAS 6371-50-2,605.62,C36H19N3O5S
Molecular Formula:C36H19N3O5S
Molecular Weight: 605.62
CAS Registry Number:6371-50-2
Manufacturing Methods : 1-Amino-4-nitro-2-anthraquinonecarboxylic acid and 2-Amino-3-chloroanthracene-9,10-dione condensation, make its formation mercaptan, then cyclization, reduction and Benzoylation.
Properties and Applications: dark blue. Blue black powder. In concentrated sulfuric acid to yellow. Alkaline reduction leuco for dark purple; Acid reduction leuco for red light brown. Direct sex good, good levelness. Used for cotton fabric dyeing, can also be used to resist and discharge
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 5 | 4-5 | 7-8 | 4-5 | 4-5 | 4-5 | 5 |
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[…] Methods : with C.I. Vat Blue 31 (C.I. 67105) the same, just in the last acylation, the use of 3-(Trifluoromethyl)benzoyl […]
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