2931.49.00.05 - O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidocyanidates

This HTS classification, 2931.49.00.05, specifically covers O-alkyl (with alkyl chains up to 10 carbon atoms, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl, or isopropyl) phosphoramidocyanidates. These compounds are characterized by a phosphorus atom bonded to an alkoxy group, a dialkylamino group, and a cyano group. They are distinct from other organo-phosphorus derivatives within heading 2931 due to this unique structural combination, which dictates their chemical properties and potential applications.

Unlike sibling categories such as phosphonites and their esters (2931.49.00.08) or specific phosphonates and their derivatives like glufosinate (2931.49.00.10) and glyphosate (2931.49.00.20), this category focuses on phosphoramidocyanidates. The presence of both the amidic nitrogen and the cyano group directly attached to the phosphorus atom differentiates them. Furthermore, distinctions from other methylphosphinate or methylphosphonate derivatives, such as butyl methylphosphinate (2931.49.00.15) or bis(1-methylpentyl) methylphosphonate (2931.49.00.25), lie in the absence of a direct P-C bond forming the phosphonate/phosphinate backbone and the presence of the phosphoramidocyanidate functionality.

As a leaf node, there are no further subdivisions under this specific classification. Therefore, the accurate classification of a product under 2931.49.00.05 hinges on a precise determination of its chemical structure, ensuring it meets all the criteria outlined: an O-alkyl substituent with a specified chain length, an N,N-dialkylamino substituent with the allowed alkyl groups, and the characteristic phosphoramidocyanidate moiety. This level of specificity is crucial for correct customs declarations and duty assessment.