6471-08-5 Usage
Uses
Used in Textile Industry:
2-Hydroxy-5-[(4,8-disulfo-2-naphtyl)azo]benzoic acid trisodium salt is used as a dye for textiles, providing a vibrant red light yellow color to fabrics. Its solubility in water allows for easy application and even distribution of the dye.
Used in Quality Control:
2-Hydroxy-5-[(4,8-disulfo-2-naphtyl)azo]benzoic acid trisodium salt is utilized in assessing the performance of various textile treatments, such as ironing fastness, light fastness, fulling, perspiration fastness, soaping, water resistance, alkali resistance, and acid resistance. The standard ISO ratings (4 and 5) indicate the level of performance required for each treatment, ensuring that textiles meet industry standards for durability and quality.
Preparation
3-Aminonaphthalene-1,5-disulfonic acid diazotization, and 2-Hydroxybenzoic acid?coupling.
Standard
Ironing Fastness
Alkali
Acid
ISO
4
Check Digit Verification of cas no
The CAS Registry Mumber 6471-08-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,7 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6471-08:
(6*6)+(5*4)+(4*7)+(3*1)+(2*0)+(1*8)=95
95 % 10 = 5
So 6471-08-5 is a valid CAS Registry Number.
InChI:InChI=1/C17H12N2O9S2.3Na/c20-14-5-4-9(6-13(14)17(21)22)18-19-10-7-12-11(16(8-10)30(26,27)28)2-1-3-15(12)29(23,24)25;;;/h1-8,19H,(H,21,22)(H,23,24,25)(H,26,27,28);;;/q;3*+1/p-3/b18-9+;;;
