NINGBO INNO PHARMCHEM CO., LTD. provides essential information regarding the properties, synthesis, and handling of Naphthol AS-D (CAS 135-61-5). This chemical intermediate, commonly appearing as a light blue powder, possesses specific characteristics that are vital for its effective use in industrial applications, particularly in textiles and pigment production.

The key chemical properties of Naphthol AS-D include its molecular formula (C18H15NO2) and molecular weight (277.32). It exhibits a melting point typically around 196-198 °C, and its low affinity for cotton, coupled with medium coupling ability, dictates its application methods. Naphthol AS-D is generally insoluble in water but soluble in naphtha, and it shows a yellow color in sodium hydroxide solution. It is also noted to be sensitive to air, highlighting the importance of proper storage.

The synthesis of Naphthol AS-D primarily involves the condensation reaction between o-methylaniline and 3-hydroxy-2-naphthoic acid. Manufacturers like NINGBO INNO PHARMCHEM CO., LTD. ensure high purity through controlled synthesis and purification processes, often involving recrystallization from solvents like xylene. Understanding this preparation method is key to appreciating the quality of the supplied product.

Proper handling and storage are crucial for maintaining the integrity of Naphthol AS-D. It should be stored in a cool, dry place, away from direct sunlight and incompatible materials. Given its sensitivity to air, airtight containers are recommended. When purchasing Naphthol AS-D, clients can rely on NINGBO INNO PHARMCHEM CO., LTD. for products that adhere to safety and quality standards, ensuring optimal performance. For further technical details or to inquire about purchasing Naphthol AS-D, please contact our sales department. The availability of Naphthol AS-D at competitive prices makes it an accessible choice for industrial needs.