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At NINGBO INNO PHARMCHEM CO., LTD., we believe that understanding the fundamental chemistry of our products is key to their effective application. Naphthol AS-D, a compound with the CAS number 135-61-5, is no exception. Its unique Naphthol AS-D chemical properties and synthesis pathways are central to its widespread use in the textile and pigment industries.
The molecular formula for Naphthol AS-D is C18H15NO2, with a molecular weight of approximately 277.32 g/mol. Typically appearing as a light blue powder, it has a defined melting point range, often cited between 195-198°C. This solid form and melting point are important characteristics for handling and processing. Naphthol AS-D is generally insoluble in water but soluble in organic solvents like naphtha, and it exhibits specific colorations in alkaline solutions, turning yellow in sodium hydroxide. It is also noted to be sensitive to air, necessitating proper storage conditions to maintain its quality.
The Naphthol AS-D synthesis typically involves the condensation reaction between o-toluidine and 3-hydroxy-2-naphthoic acid. This reaction is a classic example of amide formation, where an amine (o-toluidine) reacts with a carboxylic acid (3-hydroxy-2-naphthoic acid) to form an amide linkage. The process requires careful control of reaction temperature, pH, and the use of specific catalysts or dehydrating agents to ensure a high yield and purity of the desired product. Advanced Naphthol AS-D synthesis methods employed by manufacturers like NINGBO INNO PHARMCHEM CO., LTD. focus on optimizing these parameters to reduce by-products and enhance efficiency.
Understanding these chemical properties is crucial for users. For instance, its solubility characteristics dictate the types of solvents and formulations it can be used in for dyeing or pigment production. Its sensitivity to air means that packaging and storage must prevent prolonged exposure to atmospheric oxygen. Manufacturers who wish to buy Naphthol AS-D should be aware of these handling requirements to ensure the compound remains effective throughout their processes.
The consistent quality of Naphthol AS-D is a direct result of well-controlled Naphthol AS-D synthesis. By focusing on precise chemical reactions and purification techniques, NINGBO INNO PHARMCHEM CO., LTD. ensures that our clients receive a product that reliably performs its function as a dye primer, pigment intermediate, and printing auxiliary. This commitment to the underlying chemistry underpins the value proposition of Naphthol AS-D in the global market.
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to Global Customers
1. 20 years of R&D, manufacturing and sales experience, serving customers in 60 countries and regions around the world;
2. Own R&D laboratory, pilot platform and large-scale production workshop, which can meet the audit requirements of global customers;
3. We can satisfy customers' perfect transition from small scale lab requirements (gram level) to commercialization requirements (hundred tons level).
A: We don't have Minimum Order Quantity, exact quantity should be provided before quotation for us to calculate the exact cost.
A: We don't provide free samples due to lots of request and expensive international courier's cost, we can deduct the sample charge after commercial order placed.
A: Our payment terms: Small or sample order: T/T IN ADVANCE. Commercial order: First order should be by T/T IN ADVANCE or L/C at sight, and following orders T/T 30~90days is acceptable subject to approval of credit application.
