3689-20-1 Usage
Description
NAPHTHOL AS-LT is a shallow brown powder that is soluble in butanol and pyridine, but insoluble in water and sodium carbonate solution. It exhibits unique properties when interacting with acids and bases, such as turning palm yellow in sulfuric acid and yellow in sodium hydroxide solution with a green fluorescent. It has a melting point of 196 to 197 degrees Celsius and is sensitive to air.
Uses
Used in Textile Industry:
NAPHTHOL AS-LT is used as a dyeing agent for cotton cloth, providing a strong affinity for the fabric. Its use enhances the color and quality of the final product, making it a valuable component in the textile dyeing process.
Used in Silk and Synthetic Fibers Industry:
NAPHTHOL AS-LT is also utilized as a dyeing agent for silk, polyamide, two acetate fibers, viscose, and WeiGuan fibers. Its versatility in dyeing various types of fibers contributes to its widespread application in the textile industry, offering a range of color options and enhancing the aesthetic appeal of different fabrics.
Preparation
5-Methoxy-2-methylbenzenamine and 3-Hydroxy-2-naphthoic acid condensation.
Check Digit Verification of cas no
The CAS Registry Mumber 3689-20-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,8 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3689-20:
(6*3)+(5*6)+(4*8)+(3*9)+(2*2)+(1*0)=111
111 % 10 = 1
So 3689-20-1 is a valid CAS Registry Number.
