2007-20-7 Usage
Derivative of
naphthol
Functional groups
amino and sulfonic acid
Common uses
a. Manufacturing of dyes (specifically azo dyes)
b. Textile and food industries
c. pH indicator in analytical chemistry
d. Reagent in organic synthesis
Role in dye production
Important intermediate for producing a wide range of colors
Additional applications
a. Determination of copper in various materials
b. Determination of sulfur in various materials
Check Digit Verification of cas no
The CAS Registry Mumber 2007-20-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,0,0 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2007-20:
(6*2)+(5*0)+(4*0)+(3*7)+(2*2)+(1*0)=37
37 % 10 = 7
So 2007-20-7 is a valid CAS Registry Number.
InChI:InChI=1/C10H9NO7S2.Na/c11-9-7-2-1-6(19(13,14)15)3-5(7)4-8(10(9)12)20(16,17)18;/h1-4,12H,11H2,(H,13,14,15)(H,16,17,18);/q;+1/p-1
2007-20-7Relevant articles and documents
The Identification of Azo Dyes. Part 2. Reversal of Azo-Coupling and Reduction of Azo Groups.
Clemson, Anthony,Symons, Christine,Rezakhani, Soraya,Whiting, Mark C.
, p. 2415 - 2425 (2007/10/02)
On treatment with pyridine, phenol and sulphuric acid, azo dyes decompose, giving variable yields of p-arylazophenols by transfer of the arylazo-group present in the dye to phenol.In some cases this leads to a practical method of identification on a small scale.Alternatively, reduction of azo dyes using titanous hydroxide is efficient and general, and the resultant amines can be identified as such or after dinitrophenylation.
