2904.10.04.00 - 2-Anthracenesulfonic acid

This classification, 2904.10.04.00, specifically covers 2-Anthracenesulfonic acid. This compound is an organic chemical derivative of anthracene where a sulfonic acid group (-SO₃H) is attached to the second position of the anthracene ring system. Its primary use is often as an intermediate in the synthesis of dyes and other organic compounds.

Distinguishing 2-Anthracenesulfonic acid from its sibling categories is crucial for accurate classification. While all fall under "Derivatives containing only sulfo groups, their salts and ethyl esters," this code is specific to the 2-anthracenesulfonic acid structure. Siblings like 2904.10.08.00 (Benzenesulfonyl chloride) and 2904.10.10.00 (which includes benzenedisulfonic acid salts and toluenesulfonyl chloride) represent different parent hydrocarbon structures (benzene and toluene) or different functional groups (sulfonyl chloride), or different sulfonic acid structures (disulfonic or trisulfonic acids). The "Other" sibling category at this level is a residual category for sulfo-group-containing derivatives of hydrocarbons not elsewhere specified within the 2904.10 subheading.

As this node is a leaf node, there are no further subcategories. Therefore, classification under 2904.10.04.00 relies on confirming that the imported or exported substance is indeed 2-Anthracenesulfonic acid, based on its chemical identity and physical properties. Generic sulfonated, nitrated, or nitrosated hydrocarbon derivatives that do not fit the specific structures of the preceding sibling categories would typically be directed to the "Other" category at this level.