4403-90-1 Usage
Description
Acid Green 25, with the chemical formula C37H27N2NaO6S2, is an organic acid dye known for its blue light green color. It is available as a fine black or green powder and is soluble in water, o-chlorophenol, and slightly soluble in acetone, ethanol, and pyridine. It is insoluble in chloroform and toluene. When dissolved in strong sulfuric acid, it exhibits a blackish green color, which turns blue upon dilution. In nitric acid, it appears brown. The dye is characterized by its light fastness, soaping, perspiration fastness, oxygen bleaching, and fastness to seawater, with varying ratings according to ISO and AATCC standards.
Uses
Used in Textile Industry:
Acid Green 25 is used as a dye for wool, polyamide, silk, and their blended fabrics for dyeing and printing. Its ability to produce a vibrant blue light green color makes it a popular choice in this industry.
Used in Leather Industry:
Acid Green 25 is also utilized in the leather industry for染色 (coloring) and printing, providing a consistent and long-lasting color to leather products.
Used in Paper Industry:
In the paper industry, Acid Green 25 is employed as a dye to impart a specific color to paper products, enhancing their visual appeal and meeting the requirements of various applications.
Used in Cosmetics Industry:
Acid Green 25 is permitted for use in drugs and cosmetics, excluding use in the eye area. It is used as a colorant in the cosmetics industry to add desired shades to various products.
Used in Soap Industry:
The dye is also used in the soap industry to provide a distinct color to soap products, making them more visually appealing to consumers.
Used in Wood Industry:
Acid Green 25 is employed in the wood industry for coloring and printing, offering a long-lasting and vibrant color to wooden products.
Used in Electrical-controlled Aluminum Industry:
In the electrical-controlled aluminum industry, Acid Green 25 is used for coloring and printing applications, contributing to the visual enhancement and identification of aluminum products.
Used in Biological Color Industry:
The dye is also utilized in the biological color industry, where it is employed for various applications, including staining and coloring in research and diagnostic contexts.
Preparation
(a) ?anthracene-1,4,9,10-tetraol?or 1,4-Dihydroxyanthracene-9,10-dione and anthracene-1,4,9,10-tetraol?mixture?with 2 moles of p-Methylaniline in the presence of boric acid condensation; (b) 1,4-Dichloroanthracene-9,10-dione and 2 Moore’s p-Methylaniline?condensation, its product (C.I. Solvent Green 3, C.I. 61565) products, and translate into sodium salt.
Air & Water Reactions
Slightly soluble in water.
Reactivity Profile
Acid Green 25 is incompatible with strong oxidizing agents. .
Fire Hazard
Flash point data for Acid Green 25 are not available. Acid Green 25 is probably combustible.
Flammability and Explosibility
Nonflammable
Safety Profile
Moderately toxic by ingestion. Askin and severe eye irritant. When heated to decomposition it emits very toxic fumesof NOx, SOx, and Na2O.
Standard
Light Fastness
Fading
Stain
ISO
6
AATCC
5
Purification Methods
Purify it by salting out three times from an aqueous solution with sodium acetate, followed by repeated extraction with EtOH [McGrew & Schneider J Am Chem Soc 72 2547 1950]. It is a green powder that is slightly soluble in Me2CO, EtOH and pyridine. It is soluble in conc H2SO4 to give a blue solution that becomes turquoise on dilution. [Allen et al. J Org Chem 7 63 1942, Beilstein 14 H 725.]
Check Digit Verification of cas no
The CAS Registry Mumber 4403-90-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,0 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4403-90:
(6*4)+(5*4)+(4*0)+(3*3)+(2*9)+(1*0)=71
71 % 10 = 1
So 4403-90-1 is a valid CAS Registry Number.
InChI:InChI=1/C28H22N2O8S2.2Na/c1-15-7-9-19(23(13-15)39(33,34)35)29-21-11-12-22(30-20-10-8-16(2)14-24(20)40(36,37)38)26-25(21)27(31)17-5-3-4-6-18(17)28(26)32;;/h3-14,29-30H,1-2H3,(H,33,34,35)(H,36,37,38);;/q;2*+1/p-2
