For procurement professionals and R&D scientists in the chemical industry, having access to precise technical specifications is crucial for making informed purchasing decisions. 3-N-Isoamyl-N-ethylamino-6-methyl-7-anilinofluoran (CAS 70516-41-5) is a specialized fluoran dye coupler widely employed in the manufacturing of thermal and pressure-sensitive papers. This article outlines the key technical data that buyers should look for when sourcing this important chemical intermediate.

The primary technical parameter for any chemical is its purity. For 3-N-Isoamyl-N-ethylamino-6-methyl-7-anilinofluoran, manufacturers typically specify an assay of ≥99% (often determined by GC or HPLC). This high purity level ensures consistent performance in demanding applications, contributing to sharp, clear, and durable printed images. Buyers should always request a Certificate of Analysis (CoA) for each batch to verify that the product meets these purity standards.

The appearance of the chemical is another important characteristic. 3-N-Isoamyl-N-ethylamino-6-methyl-7-anilinofluoran is generally described as a 'light colored odourless powder'. This physical state is typical for many dye intermediates and is indicative of a well-processed product. Any deviation from this description might warrant further investigation into the product's quality or potential impurities.

Physical properties such as melting point are critical for understanding the chemical's behavior during processing. For this specific fluoran dye coupler, the melting point is typically reported as 166 min or higher (e.g., 166-168°C). This high melting point signifies good thermal stability, which is advantageous for the high-temperature coating processes used in thermal paper production. It helps prevent the dye from degrading or undergoing unwanted reactions prematurely, ensuring optimal color development upon thermal activation.

Other important technical specifications often found on datasheets include volatile matter content (typically ≤0.5%) and insoluble content (typically ≤0.5%). Low volatile matter content indicates minimal loss of product during processing or storage. Low insoluble content suggests a cleaner product, which is essential for preventing clogging in coating equipment and ensuring uniform application onto the paper substrate.

When engaging with suppliers, especially for bulk purchases, it is vital to obtain detailed Technical Data Sheets (TDS). These documents provide a comprehensive overview of the chemical's properties, typical applications, and recommended handling procedures. Information regarding storage conditions (e.g., keep away from open fire, sealed and ventilated) is also crucial for maintaining product integrity and safety.

For companies looking to buy 3-N-Isoamyl-N-ethylamino-6-methyl-7-anilinofluoran, understanding these technical specifications empowers informed decision-making. By prioritizing suppliers who provide detailed and accurate technical data, backed by robust quality control, businesses can confidently select a product that meets their stringent requirements for thermal paper manufacturing and other specialized applications.