25424-72-0 Usage
Description
Acid Green 4 is a synthetic dye characterized by its yellow light green color. It is soluble in water, resulting in a yellow-green solution. When treated with strong sulfuric acid, it turns yellow brown, and upon dilution, it reverts to yellow. In a water solution, the addition of sodium hydroxide does not alter its color. Acid Green 4 exhibits varying degrees of fastness to different factors, such as light, soaping, perspiration, oxygen bleaching, and seawater, with ratings ranging from ISO 3 to 6.
Uses
Used in Textile Industry:
Acid Green 4 is used as a dye for coloring fabrics. Its light fastness and ability to resist fading and staining make it suitable for various textile applications.
Used in Paper Industry:
Acid Green 4 is employed as a coloring agent in the paper industry, where its fastness properties are beneficial for producing colored paper products.
Used in Cosmetics Industry:
In the cosmetics industry, Acid Green 4 is used as a color additive for various products, such as hair dyes and makeup, due to its resistance to fading and staining.
Used in Analytical Chemistry:
Acid Green 4 can be utilized as an indicator in analytical chemistry, taking advantage of its color-changing properties in response to different chemical conditions.
Used in Dye-sensitized Solar Cells:
Acid Green 4 may also be used in the development of dye-sensitized solar cells, where its light absorption properties can contribute to the efficiency of the solar cell.
Used in Biological Staining:
In the field of biology, Acid Green 4 can be employed as a staining agent for various applications, such as histology and cytology, to visualize and differentiate cellular structures.
Preparation
Will on nitrosation 4-Hydroxynaphthalene-1-sulfonic acid, and then turn it into iron sodium salt.
Standard
Light Fastness
Fading
Stain
ISO
6
Check Digit Verification of cas no
The CAS Registry Mumber 25424-72-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,4,2 and 4 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 25424-72:
(7*2)+(6*5)+(5*4)+(4*2)+(3*4)+(2*7)+(1*2)=100
100 % 10 = 0
So 25424-72-0 is a valid CAS Registry Number.
InChI:InChI=1/3C10H7NO5S.Fe.3Na/c3*12-10-7-4-2-1-3-6(7)9(17(14,15)16)5-8(10)11-13;;;;/h3*1-5,12H,(H,14,15,16);;;;/q;;;+3;3*+1/p-6
