6428-31-5 Usage
Uses
Used in Textile Industry:
Direct Black 19 is used as a dye for various types of fabrics, including viscose, cotton knitwear, blankets, flannelette, silk, and wool/viscose fiber blend fabrics. It is particularly useful in the dyeing and printing of viscose fabric.
Used in Leather Industry:
Direct Black 19 is also used in the leather industry for dyeing and coloring processes.
Used in Paper Industry:
The dye is utilized in the paper industry to provide color to paper products.
Used in Electrochemical Aluminum Coloring:
Direct Black 19 is employed in the electrochemical process of coloring aluminum.
Standard:
The standard for Direct Black 19 includes the following properties:
Acid Resistance: ISO 4, AATCC 4-5
Alkali Resistance: ISO 3, AATCC 3
Light Fastness: ISO 3-4, AATCC 3
Soaping: ISO 2, AATCC 2-3
Water Fading: Not specified
Stain: Not specified
Fading: Not specified
These properties indicate the performance and durability of Direct Black 19 in various applications, making it a versatile dye for different industries.
Preparation
4-Nitrobenzenamine (2 Moore) diazo, one in acid conditions, a in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid (1 Moore) coupling, and then will the nitro reduction, diazotization, again with Benzene-1,3-diamine (2 Moore) coupled.
Flammability and Explosibility
Nonflammable
Standard
Acid Resistance
Fading
Stain
ISO
4
AATCC
4-5
Check Digit Verification of cas no
The CAS Registry Mumber 6428-31-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,2 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6428-31:
(6*6)+(5*4)+(4*2)+(3*8)+(2*3)+(1*1)=95
95 % 10 = 5
So 6428-31-5 is a valid CAS Registry Number.
InChI:InChI=1/C34H29N13O7S2.2Na/c35-18-1-11-26(24(37)15-18)44-40-20-3-7-22(8-4-20)42-46-32-28(55(49,50)51)13-17-14-29(56(52,53)54)33(34(48)30(17)31(32)39)47-43-23-9-5-21(6-10-23)41-45-27-12-2-19(36)16-25(27)38;;/h1-16,48H,35-39H2,(H,49,50,51)(H,52,53,54);;/q;2*+1/p-2/b44-40+,45-41+,46-42+,47-43+;;
