6420-33-3 Usage
Uses
Used in Textile Industry:
Tetrasodium 3,3'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(naphthalene-1,5-disulphonate) is used as a dye for cellulose fibers due to its ability to produce vibrant colors and its resistance to fading and staining.
Used in Paper Industry:
In the paper industry, tetrasodium 3,3'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(naphthalene-1,5-disulphonate) is used for coloring paper, providing a range of hues and ensuring the color's stability against environmental factors such as light exposure and water.
The provided materials indicate that the dye has the following properties and resistance levels according to the ISO and AATCC standards:
Acid Resistance: ISO 3, AATCC 4-5
Alkali Resistance: ISO 5, AATCC 3
Light Fastness: ISO 6-7, AATCC 5
Soaping: ISO 2-3, AATCC 3-4
Water Fading: Not provided
Stain: Not provided
These properties make tetrasodium 3,3'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(naphthalene-1,5-disulphonate) a suitable choice for various applications in the textile and paper industries, where colorfastness and resistance to environmental factors are crucial.
Preparation
3-Aminonaphthalene-1,5-disulfonic acid diazo, and 2-Amino-4-methylanisole coupling, and then make the light gasification.
Flammability and Explosibility
Notclassified
Standard
Acid Resistance
Fading
Stain
ISO
3
AATCC
4-5
Check Digit Verification of cas no
The CAS Registry Mumber 6420-33-3 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 0 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6420-33:
(6*6)+(5*4)+(4*2)+(3*0)+(2*3)+(1*3)=73
73 % 10 = 3
So 6420-33-3 is a valid CAS Registry Number.
InChI:InChI=1/C37H32N6O15S4.4Na/c1-19-11-29(31(57-3)17-27(19)42-40-21-13-25-23(35(15-21)61(51,52)53)7-5-9-33(25)59(45,46)47)38-37(44)39-30-12-20(2)28(18-32(30)58-4)43-41-22-14-26-24(36(16-22)62(54,55)56)8-6-10-34(26)60(48,49)50;;;;/h5-18H,1-4H3,(H2,38,39,44)(H,45,46,47)(H,48,49,50)(H,51,52,53)(H,54,55,56);;;;/q;4*+1/p-4
