2904.10.10.00 - m-Benzenedisulfonic acid, sodium salt; 1,5-Naphthalenedisulfonic acid; andp-Toluenesulfonyl chloride

This classification covers specific sulfonated derivatives of hydrocarbons, namely m-Benzenedisulfonic acid, sodium salt; 1,5-Naphthalenedisulfonic acid; and p-Toluenesulfonyl chloride. These compounds are characterized by the presence of one or more sulfo groups (-SO3H) attached to hydrocarbon structures, with the exception of p-Toluenesulfonyl chloride which is a sulfonyl chloride derivative. The inclusion of the sodium salt of m-Benzenedisulfonic acid highlights that salts of these sulfonic acids are also encompassed within this category.

This category is distinct from its siblings by its precise enumeration of these specific chemical entities. For instance, 2-Anthracenesulfonic acid (2904.10.04.00) and Benzenesulfonyl chloride (2904.10.08.00) represent different sulfonic acid derivatives or related compounds with distinct structural features and applications. Similarly, the specified mixtures of naphthalenetrisulfonic acids (2904.10.15.00) cover compounds with a higher degree of sulfonation and different isomeric compositions compared to the 1,5-Naphthalenedisulfonic acid listed here. The "Other" category at this level would capture any remaining sulfonated derivatives not specifically enumerated.

As this is a leaf node in the HTS classification, there are no further subcategories. Classification under 2904.10.10.00 is determined by the specific identity of the imported or exported chemical, requiring accurate product identification and laboratory analysis if necessary to confirm the presence of m-Benzenedisulfonic acid, sodium salt; 1,5-Naphthalenedisulfonic acid; or p-Toluenesulfonyl chloride.