For any chemical intermediate, understanding its purity and specifications is the first step towards successful application and procurement. Naphthol AS, identified by CAS number 92-77-3, is no exception. Its performance in synthesizing organic pigments and its effectiveness in textile dyeing and printing are directly tied to its quality attributes. Manufacturers and formulators must pay close attention to these details to ensure consistent results and avoid production issues.

The primary specification for Naphthol AS is its purity, typically rated at 99.0% or higher. This high level of purity is essential because even minor impurities can affect the final color yield, hue, and fastness properties of pigments or dyed fabrics. For instance, in organic pigment manufacturing, the absence of interfering substances ensures the formation of the intended chromophore, leading to brighter and more stable colors. Similarly, in textile applications, high-purity Naphthol AS contributes to achieving deeper shades and better resistance to washing and light.

Beyond purity, other key specifications for Naphthol AS include its physical appearance, which is generally described as a rice white or beige powder. The melting point, typically in the range of 246-248 °C, is another indicator of its quality and consistency. Manufacturers also pay attention to parameters like solubility in various solvents and low levels of insolubles, which are crucial for efficient processing in dyeing baths or pigment dispersions.

When you buy Naphthol AS, ensuring that the supplier provides a detailed Certificate of Analysis (COA) that outlines these specifications is vital. Companies like NINGBO INNO PHARMCHEM CO.,LTD. prioritize these quality parameters. By focusing on suppliers who guarantee high purity and provide transparent specification data, businesses can confidently purchase Naphthol AS, knowing they are obtaining a reliable chemical intermediate that will perform optimally in their specific applications. Requesting a quote and discussing these details with a supplier is a prudent step for any procurement decision.