2379-81-9 Usage
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.
Properties and Applications
brown light grey. Black powder. Soluble in 2 – Chlorophenol, slightly soluble in Chloroform and Pyridine , not soluble in Acetone, Etanol, Toluene and Xylene. In concentrated sulfuric acid for red, dilution after flocculent olive green precipitation. Alkaline reduction leuco for red brown; Acid reduction leuco for yellow brown. Mainly used in cotton fiber dyeing, suitable for suspension pad dyeing, also used for cotton yarn of the jig dyeing cotton and the impregnation, rarely used for printing. Can with other VAT dye spell dyed noise. Dyeing silk, affinity and levelness were good, also used for Fiber/cotton blended fabric dyeing.
Standard
Ironing Fastness
Chlorine bleach
Light Fastness
Mercerized
Oxygen bleach
Soaping
Fading
Stain
ISO
3
4-5
7
4-5
4-5
4-5
4-5
AATCC
3
4-5
7
4
4-5
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)
