Factory Supply Naphthol AS - E with CAS number 92 - 78 - 4 is a high - quality chemical product. The chemical name of Naphthol AS - E is N-(3-Hydroxy-2-naphthoyl)-p-phenetidine. It appears as a yellow to orange crystalline powder.
It has a molecular formula of C19H17NO3, and a relative molecular mass of approximately 307.34. The melting point of Naphthol AS - E ranges from 138 - 142°C. This product is insoluble in water but soluble in organic solvents such as ethanol, ether, and acetone. It is stable under normal temperature and pressure conditions, but it should be stored in a cool, dry, and well - ventilated place away from incompatible substances to ensure its quality and stability.
Naphthol AS - E has a wide range of applications in various industries. In the textile industry, it is commonly used as a coupling component in the production of azo dyes. These dyes can provide bright and fast - colored shades on cotton, viscose, and other cellulose fibers. They are known for their excellent light and washing fastness, making the dyed textiles long - lasting and color - stable.
In the printing industry, Naphthol AS - E is used to prepare printing pastes for textile printing. The resulting prints have high definition and good color yield. Additionally, it can also be used in the production of some specialty inks, providing unique color properties and performance for printing on different substrates.
It also has applications in the research field. Scientists may use it as a reagent in organic synthesis experiments to study reaction mechanisms and develop new chemical compounds.
When using Naphthol AS - E in the textile dyeing process, first, it needs to be dissolved in an appropriate organic solvent according to the required concentration. The dissolution process should be carried out under mild heating and stirring conditions to ensure complete dissolution. Then, the dissolved Naphthol AS - E solution is mixed with the diazo component to form the azo dye in the dye bath. The pH value and temperature of the dye bath need to be carefully controlled. Generally, a slightly alkaline environment (pH 8 - 9) and a temperature of around 30 - 40°C are suitable for the coupling reaction.
In textile printing, the prepared Naphthol AS - E solution is added to the printing paste formulation. The printing paste should have appropriate viscosity and rheological properties to ensure smooth printing on the fabric. After printing, the fabric needs to be steamed and washed to fix the dye and remove any unreacted substances.
A textile dyeing factory in India was facing the problem of low color fastness and dull colors in their cotton fabric dyeing. They decided to switch to using Factory Supply Naphthol AS - E. First, they conducted a series of small - scale experiments to optimize the dyeing process. They adjusted the concentration of Naphthol AS - E in the dye bath, the pH value, and the temperature. After several trials, they found the optimal conditions: a Naphthol AS - E concentration of 2 g/L, a pH of 8.5, and a dyeing temperature of 35°C.
They then applied these conditions to large - scale production. The results were remarkable. The dyed cotton fabrics showed bright and vivid colors, and the light and washing fastness were significantly improved. The factory was able to increase its product quality and customer satisfaction, which in turn led to an increase in sales volume and market share.
In another case, a printing company in Italy was looking for a new way to improve the quality of their textile prints. They incorporated Naphthol AS - E into their printing paste formulation. By carefully adjusting the amount of Naphthol AS - E and other additives in the paste, they were able to produce prints with high definition and excellent color yield. Their prints were well - received in the fashion market, and they were able to expand their business by taking on more high - end printing orders.
If you have any questions or need further information about Factory Supply Naphthol AS - E CAS 92 - 78 - 4, please feel free to contact us. Our email address is info@vivalr.com, and our phone number is (86) 15866781826.
Este es William, CEO de Zhishang Chemical Co., Ltd.
Le invitamos a visitar nuestra fábrica. Como el fabricante de productos químicos superior, nos hemos estado esforzando para la calidad del producto, la innovación, el R&D, y el servicio de atención al cliente por los últimos 7 años. En los próximos 10 años o incluso más, nos comprometemos a convertirnos en el proveedor de productos químicos más fiable del mundo, creando una marca internacional conocida en la que confíen los clientes, con el espíritu de "un metro de ancho, diez mil metros de profundidad", seguimos centrándonos en la investigación y el desarrollo de productos, seguimos centrándonos en el servicio al cliente, seguimos mejorando el sistema de servicio de la cadena de suministro, para crear un equipo profesional de servicio de suministro de productos químicos, para lograr una cooperación a largo plazo en la que todos ganen. No dude en ponerse en contacto con nosotros si tiene alguna pregunta.
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