3746-79-0 Usage
Description
Disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate is an organic compound that exhibits a red color in its pure form. It is soluble in water, resulting in a red solution, and slightly soluble in ethanol and acetone. However, it is insoluble in other organic solvents. disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate undergoes color changes when exposed to different acids, turning blue in the presence of strong sulfuric acid and yellow in nitric acid. Its aqueous solution also changes color when mixed with strong hydrochloric acid or sodium hydroxide.
Uses
Used in Textile Industry:
Disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate is used as a dye in the textile industry for coloring fabrics. Its color-changing properties in response to different acids make it suitable for creating unique color effects and patterns on textiles.
Used in Analytical Chemistry:
disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate can be used as an analytical reagent in various chemical tests due to its color-changing properties. It can be employed to detect the presence of specific ions or to monitor pH changes in a solution.
Used in Colorimetry:
Disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate can be used as a color standard in colorimetric analysis, allowing for accurate color measurements and comparisons.
Used in Water Quality Testing:
disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate's solubility and color-changing properties can be utilized in water quality testing to detect the presence of specific contaminants or to measure the pH of water samples.
Standard:
The standard for disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate includes various parameters such as light fastness, soaping, perspiration fastness, oxygen bleaching, and fastness to seawater. These standards ensure the quality and performance of the compound in different applications.
ISO Ratings:
The International Organization for Standardization (ISO) provides ratings for the compound's performance in various tests, such as fading and staining resistance. The ratings range from 1 to 5, with 1 being the lowest and 5 being the highest performance. The provided materials indicate the following ISO ratings for disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate:
Light Fastness: 3
Soaping: 2
Perspiration Fastness: 5
Oxygen Bleaching: 2
Fastness to Seawater: 4
Fading: 3
Stain: 2
Preparation
4-Aminonaphthalene-1-sulfonic acid diazo, and 5-Hydroxynaphthalene-1-sulfonic acid coupling.
Standard
Light Fastness
Fading
Stain
ISO
3
Check Digit Verification of cas no
The CAS Registry Mumber 3746-79-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,4 and 6 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 3746-79:
(6*3)+(5*7)+(4*4)+(3*6)+(2*7)+(1*9)=110
110 % 10 = 0
So 3746-79-0 is a valid CAS Registry Number.
InChI:InChI=1/C20H14N2O7S2/c23-20-15-6-3-7-18(30(24,25)26)14(15)8-9-17(20)22-21-16-10-11-19(31(27,28)29)13-5-2-1-4-12(13)16/h1-11,21H,(H,24,25,26)(H,27,28,29)
