2912.49.15.00 - p-Hydroxybenzaldehyde

This HTS classification covers aromatic aldehydes that possess a hydroxyl group (-OH) directly attached to the benzene ring, in addition to the aldehyde functional group (-CHO). Specifically, this category focuses on *p-Hydroxybenzaldehyde*. This compound is a white crystalline solid with a characteristic sweet, floral aroma, and its structure features a hydroxyl group in the *para* position relative to the aldehyde group on the phenyl ring. It finds significant use as an intermediate in the synthesis of pharmaceuticals, agrochemicals, fragrances, and polymers.

Within the broader category of "Aldehyde alcohols, aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function," and more specifically under "Aromatic" aldehydes, this subcategory distinguishes itself by the direct presence of a phenolic hydroxyl group on the aromatic ring. Unlike its sibling, *p-Anisaldehyde* (2912.49.10.00), which features a methoxy group (-OCH3) at the *para* position, *p-Hydroxybenzaldehyde* possesses a free hydroxyl group. This distinction is critical for chemical reactivity and intended applications, guiding accurate classification.

As *p-Hydroxybenzaldehyde* is a leaf node within the HTS structure, there are no further subcategories. Therefore, classification under 2912.49.15.00 is definitive for this specific chemical. Importers and exporters should ensure that the product's chemical identity and purity align with the properties of *p-Hydroxybenzaldehyde* to confirm this classification. Its unique combination of phenolic and aldehydic functionality dictates its placement here, separate from other aromatic aldehydes with different oxygen-containing substituents.