6471-07-4 Usage
Uses
Used in Textile Industry:
2-Hydroxy-5-[(6,8-disulfo-2-naphtyl)azo]benzoic acid trisodium salt is used as a dye for the textile industry due to its ability to produce various colors under different conditions. Its solubility in water and interaction with other chemicals make it suitable for coloring fabrics.
Used in Color Fastness Testing:
2-Hydroxy-5-[(6,8-disulfo-2-naphtyl)azo]benzoic acid trisodium salt is also utilized in color fastness testing, which is essential for evaluating the performance and durability of colored textiles. The fastness properties of 2-Hydroxy-5-[(6,8-disulfo-2-naphtyl)azo]benzoic acid trisodium salt are assessed based on various factors such as ironing, light, fulling, perspiration, soaping, water, alkali, and acid. The ISO and AATCC standards provide a grading system (ranging from 4 to 5) to measure the fastness of the dye under different conditions.
Preparation
7-Aminonaphthalene-1,3-disulfonic acid diazotization, and 2-Hydroxybenzoic acid coupling.
Standard
Ironing Fastness
Alkali
Acid
ISO
4
AATCC
4
Check Digit Verification of cas no
The CAS Registry Mumber 6471-07-4 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 7 respectively.
Calculate Digit Verification of CAS Registry Number 6471-07:
(6*6)+(5*4)+(4*7)+(3*1)+(2*0)+(1*7)=94
94 % 10 = 4
So 6471-07-4 is a valid CAS Registry Number.
InChI:InChI=1/C17H12N2O9S2.3Na/c20-15-4-3-11(7-14(15)17(21)22)19-18-10-2-1-9-5-12(29(23,24)25)8-16(13(9)6-10)30(26,27)28;;;/h1-8,18H,(H,21,22)(H,23,24,25)(H,26,27,28);;;/q;3*+1/p-3/b19-11+;;;
