2929.10.80.10 - Methylenedi-p-phenylene isocyanate (MDI)

This HTS category specifically classifies Methylenedi-p-phenylene isocyanate (MDI). MDI is a critical organic chemical intermediate primarily used in the production of polyurethane foams, elastomers, coatings, and adhesives. Its distinct chemical structure, characterized by two isocyanate groups attached to a methylenediphenyl backbone, dictates its wide-ranging industrial applications.

This subheading differentiates MDI from other "other" isocyanates classified under 2929.10.80.90, which would encompass isocyanates not specifically enumerated or identifiable as MDI. The presence of the methylenediphenyl linkage is the defining characteristic for classification under this code.

As this is a leaf node within the HTS structure, there are no further subcategories for this specific classification. Therefore, all imports of Methylenedi-p-phenylene isocyanate will be directed to this particular code, assuming it meets the chemical definition and is not further processed or formulated in a manner that would warrant classification elsewhere.