3701-40-4 Usage
Uses
Used in Textile Industry:
Disodium 4-hydroxy-3-[[4'-[(2-hydroxynaphthyl)azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulphonate is used as a dye for textiles. Its ability to produce different shades of red and orange in water and ethanol solutions, as well as its color change in the presence of strong acids and bases, makes it a versatile dye for various textile applications.
Used in Dye Industry:
In the dye industry, disodium 4-hydroxy-3-[[4'-[(2-hydroxynaphthyl)azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulphonate is used as a colorant for various products. Its unique color-changing properties in response to different chemical conditions make it an attractive choice for creating a wide range of hues and shades.
disodium 4-hydroxy-3-[[4'-[(2-hydroxynaphthyl)azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulphonate also exhibits good light fastness, soaping fastness, perspiration fastness, oxygen bleaching fastness, and fastness to seawater, as indicated by its ISO and AATCC ratings. These properties make it suitable for use in applications where color stability and resistance to various environmental factors are important.
Preparation
4-(4-Amino-2-methylphenyl)-3-methylbenzenamine double nitriding, respectively with the 4-Hydroxynaphthalene-2,7-disulfonic acid and Naphthalen-2-ol coupling.
Standard
Light Fastness
Fading
Stain
ISO
5
AATCC
4-5
Check Digit Verification of cas no
The CAS Registry Mumber 3701-40-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,0 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3701-40:
(6*3)+(5*7)+(4*0)+(3*1)+(2*4)+(1*0)=64
64 % 10 = 4
So 3701-40-4 is a valid CAS Registry Number.
