HS Code for Methacrylic esters

Methacrylic esters are classified under HS code 2916.14. These compounds are the esters of methacrylic acid, formed by the reaction of the acid with various alcohols. The most commercially significant member of this group is methyl methacrylate (MMA). The classification falls under Heading 2916, which covers unsaturated acyclic monocarboxylic acids and their derivatives. The esters are specifically grouped in 2916.14 to distinguish them from the parent acid (2916.13) and other unsaturated acids like acrylic acid. These esters are typically liquid monomers used extensively in the production of acrylic plastics (PMMA), surface coatings, and adhesives. Because they are highly reactive and prone to polymerization, they are often shipped with inhibitors. As long as these inhibitors are present only in the amounts necessary for stabilization, the product remains classified as a separate chemically defined compound in Chapter 29.

Products Included

• Methyl methacrylate (MMA)
• Ethyl methacrylate
• Butyl methacrylate
• Lauryl methacrylate
• 2-Ethylhexyl methacrylate

Common Misclassification

The most common misclassification for methacrylic esters is HS code 3906.10, which is for Poly(methyl methacrylate) or PMMA. The distinction lies in the state of polymerization; 2916.14 is for the monomer (the single molecule), while 3906 is for the polymer (the plastic resin). Another error is misclassifying them under 2916.12, which is for esters of acrylic acid (acrylates), such as methyl acrylate or butyl acrylate, which lack the methyl group on the alpha-carbon.

FAQ

What is the HS code for Methyl methacrylate?

Methyl methacrylate, the most common methacrylic ester, is classified under HS code 2916.14.

How do I distinguish between an ester and the acid?

The acid (methacrylic acid) is 2916.13, while the esters (where the hydrogen of the carboxyl group is replaced by an alkyl group) are 2916.14.