2706-28-7 Usage
Description
CI 13015, also known as 4-Aminoazobenzene-3,4''-disulfonic Acid Disodium Salt, is an azo organosulfur dye with the chemical formula C12H10N3Na2O6S2. It is characterized by its red light yellow color, which is insoluble in water but soluble in ethanol. CI 13015 has been used in various applications, including as a biological stain and in the dyeing of polyamide, vinegar fiber, and silk. However, its use as a food dye (E number E105) has been delisted and is now forbidden due to toxicological data showing it is harmful.
Uses
Used in Dye Industry:
CI 13015 is used as a dye for polyamide, vinegar fiber, and silk, providing a red light yellow color to these materials.
Used in Leather and Paper Color Industry:
CI 13015 is used as a colorant in the leather and paper industries, where it imparts a yellow brown color.
Used in Ink, Soap, Resin, and Biological Shading:
The aluminum salt of CI 13015 can be used in the production of ink, soap, resin, and for biological shading purposes.
Standard:
The light fastness, soaping, perspiration fastness, oxygen bleaching, and fastness to seawater of CI 13015 are rated according to ISO and AATCC standards, with values ranging from 1 to 5 and 1-2, respectively.
Preparation
4-(Phenyldiazenyl)benzenamine (C.I.Solvent Yellow 1, C.I. 11000)?disulfonated.
Standard
Light Fastness
Fading
Stain
ISO
3
AATCC
4-5
Check Digit Verification of cas no
The CAS Registry Mumber 2706-28-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,7,0 and 6 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 2706-28:
(6*2)+(5*7)+(4*0)+(3*6)+(2*2)+(1*8)=77
77 % 10 = 7
So 2706-28-7 is a valid CAS Registry Number.
