73384-78-8 Usage
Description
Acid Yellow 127 is a yellow powder that exhibits a colorful green light yellow color. It is soluble in water and forms a dye solution with a green light yellow hue. The dye solution can be boiled to obtain a clear solution. It decomposes in the thick of sodium hydroxide solution, resulting in a yellow precipitate after dilution.
Uses
Used in Textile Industry:
Acid Yellow 127 is used as a direct dye for wool, silk, and polyamide fiber fabrics for dyeing and printing. It is also used for leather coloring.
Standard:
Acid Yellow 127 has the following standards for various properties:
Light Fastness: ISO 6
Soaping: ISO 4
Perspiration Fastness: ISO 5
Oxygen Bleaching: ISO 5
Fastness to Seawater: ISO 4-5
Fading: ISO 4-5
Stain: ISO 5
These standards indicate the performance and quality of Acid Yellow 127 in various applications.
Preparation
2,4-Diaminobenzenesulfonic acid first and 2,4,6-Trichloro-1,3,5-triazine condensation, again with N-methylbenzenamine condensation, and then diazo, and 1-(2-Chlorophenyl)-3-methyl-1H-pyrazol-5(4H)-one?coupling.
Standard
Light Fastness
Fading
Stain
ISO
6
Check Digit Verification of cas no
The CAS Registry Mumber 73384-78-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,3,8 and 4 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 73384-78:
(7*7)+(6*3)+(5*3)+(4*8)+(3*4)+(2*7)+(1*8)=148
148 % 10 = 8
So 73384-78-8 is a valid CAS Registry Number.
InChI:InChI=1/C26H21Cl2N9O4S.Na/c1-15-22(23(38)37(35-15)20-11-7-6-10-18(20)27)34-33-19-14-16(12-13-21(19)42(39,40)41)29-25-30-24(28)31-26(32-25)36(2)17-8-4-3-5-9-17;/h3-14,22H,1-2H3,(H,39,40,41)(H,29,30,31,32);/q;+1/p-1/b34-33+;
