502-02-3 Usage
Description
4-[[4-(dimethylamino)phenyl]azo]benzenesulphonic acid is a chemical compound that belongs to the class of azo dyes. It is characterized by its bright red color and is composed of a benzene ring with a sulphonate group and an azo group that contains a dimethylamino phenyl group. This unique structure endows it with distinctive color properties and chemical characteristics, making it suitable for various industrial and consumer applications.
Uses
Used in Textile Industry:
4-[[4-(dimethylamino)phenyl]azo]benzenesulphonic acid is used as a colorant for dyeing fabrics, providing them with a vibrant red hue. Its chemical properties make it suitable for use in this industry, ensuring colorfastness and durability in various textile products.
Used in Cosmetics Industry:
In the cosmetics industry, 4-[[4-(dimethylamino)phenyl]azo]benzenesulphonic acid is used as a color additive in certain products, such as lipsticks and blushes, to impart a rich red color. Its compatibility with other ingredients and ability to provide a long-lasting color make it a valuable component in cosmetic formulations.
Used in Hair Dye Industry:
4-[[4-(dimethylamino)phenyl]azo]benzenesulphonic acid is also utilized in hair dyes, particularly for creating red shades. Its ability to adhere to hair fibers and provide a consistent coloration makes it a preferred choice for hair dye formulations.
Check Digit Verification of cas no
The CAS Registry Mumber 502-02-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,0 and 2 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 502-02:
(5*5)+(4*0)+(3*2)+(2*0)+(1*2)=33
33 % 10 = 3
So 502-02-3 is a valid CAS Registry Number.
InChI:InChI=1/C14H15N3O3S/c1-17(2)13-7-3-11(4-8-13)15-16-12-5-9-14(10-6-12)21(18,19)20/h3-10H,1-2H3,(H,18,19,20)/b16-15+
502-02-3Relevant articles and documents
Nano-CuFe2O4-supported sulfonic acid as a novel and recyclable nanomagnetic acid for diazotization of aromatic amines: efficient synthesis of various azo dyes
Nemati, Firouzeh,Elhampour, Ali,Natanzi, Mahshid B.,Sabaqian, Samaneh
, p. 1045 - 1054 (2016/05/02)
Abstract: A novel heterogeneous sulfonic acid functionalized nanomagnetic CuFe2O4 was successfully prepared and characterized by analyzing different obtained data including Fourier transform infrared spectroscopy, X-ray powder diffraction, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, thermogravimetric analysis, dynamic light scattering and vibrating sample magnetometer. Then the novel acidic reagent was examined in synthesis of various azo-containing compounds from coupling of aryl diazonium ferrite sulfate salts with aromatic and non-aromatic compounds. The procedure starts by diazotization of aromatic amines with NaNO2 and wet CuFe2O4–SO3H and then coupling reaction of aryl diazonium ferrite sulfate salts with appropriate reagent. The prepared nano-solid acid showed high activity in synthesis of variety of aryl diazonium salts. In addition the as-prepared aryl diazonium ferrite sulfate salts are stable at room temperature for many hours and reacted efficiently in coupling reactions of aryl diazonium salts. All the azo dyes are synthesized in high yields and simple reaction conditions at room temperature. Moreover, the nanomagnetic solid acid was easily recovered from the reaction mixture and reused five runs without significant loss of activity. Graphical Abstract: [Figure not available: see fulltext.]
