2379-81-9 Usage
Uses
Used in Textile Industry:
VAT BLACK 27 is used as a dye for cotton fiber, cotton yarn, and cotton blended fabrics. It provides good affinity and levelness, making it suitable for various dyeing techniques such as suspension pad dyeing and jig dyeing.
Used in Dyeing Techniques:
VAT BLACK 27 is used in suspension pad dyeing and jig dyeing for cotton and cotton blended fabrics. It can also be combined with other VAT dyes to achieve desired color effects.
Standard:
VAT BLACK 27 has the following standards for various properties:
Ironing Fastness: ISO 3, AATCC 3
Chlorine bleach: ISO 4-5, AATCC 4-5
Light Fastness: ISO 7, AATCC 7
Oxygen bleach: ISO 4-5, AATCC 4
Soaping: ISO 4-5, AATCC 4-5
Fading: ISO 4-5, AATCC 4-5
Stain: ISO 4-5, AATCC 4-5
Preparation
(a) N-(4-chloro-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamide?and N-(4-amino-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamide in the presence of copper condensation, then use Chlorosulfonic acid cyclization, (b) N-[4-(4-benzoylimino-9,10-dioxo-anthracen-1-ylidene)amino-9,10-dihydroxy-anthracen-1-yl]benzamide?in sulfuric acid central change, then the product oxidation.
Standard
Ironing Fastness
Fading
Stain
ISO
3
AATCC
3
Check Digit Verification of cas no
The CAS Registry Mumber 2379-81-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,3,7 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2379-81:
(6*2)+(5*3)+(4*7)+(3*9)+(2*8)+(1*1)=99
99 % 10 = 9
So 2379-81-9 is a valid CAS Registry Number.
InChI:InChI=1/C42H23N3O6/c46-37-23-15-7-9-17-25(23)39(48)33-31(37)29(43-41(50)21-11-3-1-4-12-21)19-27-28-20-30(44-42(51)22-13-5-2-6-14-22)32-34(36(28)45-35(27)33)40(49)26-18-10-8-16-24(26)38(32)47/h1-20,45H,(H,43,50)(H,44,51)
