2904.36.00.00 - Perfluorooctane sulfonyl fluoride

This HTS classification covers perfluorooctane sulfonyl fluoride. This chemical compound is a fluorinated organic compound characterized by a sulfonyl fluoride functional group attached to a perfluorinated eight-carbon chain. It serves as a key intermediate in the synthesis of various perfluorinated substances, including surfactants, polymers, and other specialty chemicals with unique properties such as water and oil repellency.

Distinguishing this category from its siblings, 2904.36.00.00 specifically identifies the sulfonyl fluoride form. The sibling categories (2904.31 to 2904.35) cover perfluorooctane sulfonic acid itself and its various salt forms (ammonium, lithium, potassium, and other unspecified salts). Therefore, the classification hinges on the specific chemical structure, with 2904.36.00.00 reserved for the reactive fluoride derivative, distinct from the acid and its ionized counterparts.

As a leaf node, this classification does not have further subcategories. Classification within 2904.36.00.00 is determined by the precise chemical identity of perfluorooctane sulfonyl fluoride. The presence of the sulfonyl fluoride group (-SO2F) and the eight-carbon perfluorinated chain (C8F17-) are the defining criteria for goods falling under this specific tariff line.