2916.14.20.20 - Methyl methacrylate

This classification covers "Methyl methacrylate," a specific ester derived from methacrylic acid. Methyl methacrylate is a colorless liquid with a characteristic acrid odor. It is primarily known for its role as a monomer in the production of polymethyl methacrylate (PMMA), commonly known as acrylic glass or Plexiglas, and various copolymers. Its utility extends to applications in paints, coatings, adhesives, and dental materials, owing to its polymerization capabilities and resulting physical properties.

At this level, the distinguishing factor is the specific ester. While the parent category covers various esters of methacrylic acid, 2916.14.20.20 specifically identifies methyl methacrylate. Its sibling, 2916.14.20.10, is for ethyl methacrylate, a different ester with distinct physical properties and applications, though also derived from methacrylic acid. The "Other" sibling category, 2916.14.20.50, is a residual category for any other esters of methacrylic acid not specifically listed.

As this HTS code represents a leaf node, there are no further subdivisions. Classification into this specific code is determined by the chemical identity of the substance being methyl methacrylate. Therefore, confirmation of its presence and quantity would be the primary classification criteria when differentiating from other methacrylic acid esters or related chemical compounds.