Methyl Methacrylate Monomer (MMA)
Pure methyl methacrylate (MMA) is a colorless, volatile liquid monomer classified under HTS 2916.14.2020 as an ester of methacrylic acid. It serves as the essential building block for producing polymethyl methacrylate (PMMA) plastics and resins. This chemically defined unsaturated acyclic monocarboxylic acid ester falls squarely within Chapter 29 heading 2916.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing >5% stabilizers or impurities beyond transport needs
Chapter 29 excludes mixtures where additives render product suitable for specific use rather than general chemical use (note g); becomes 'other chemical preparations'.
If formulated specifically as polymer initiator with pigments
Polymer processing preparations like acrylic initiators fall under Chapter 32 when primarily used in paint/coating manufacture.
If partially polymerized to syrup/prepolymer state
Partially polymerized MMA (syrup) is classified as acrylic polymers under Chapter 39, not pure monomer.
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Import Tips & Compliance
• Provide detailed chemical purity analysis and CAS number (80-62-6) documentation to confirm classification as pure MMA monomer
• Include Safety Data Sheets (SDS) showing stabilizer content does not exceed transport/preservation limits per Chapter 29 note (f)
• Verify inhibitor/stabilizer levels; excessive additives may shift classification to mixtures under 3824 if not 'necessary for transport'
Related Products under HTS 2916.14.20.20
Stabilized Methyl Methacrylate for Transport
Methyl methacrylate containing minimal hydroquinone stabilizer (typically 10-100 ppm) to prevent polymerization during storage and shipping. Classified under HTS 2916.14.2020 per Chapter 29 note (f) as stabilizer necessary for preservation/transport. Remains a separate chemically defined compound despite added stabilizer.
High-Purity Methyl Methacrylate 99.9% Electronics Grade
Ultra-pure MMA monomer with 99.9% purity and <10 ppm moisture, used in optical lens and display manufacturing. Falls under HTS 2916.14.2020 as chemically defined methacrylic acid ester without excluded additives. Meets Chapter 29 requirements for separate organic compounds.
Industrial Methyl Methacrylate Bulk Drums
MMA monomer packaged in 440 lb steel drums with 25 ppm MEHQ inhibitor for industrial polymerization plants. HTS 2916.14.2020 classification as unsaturated acyclic monocarboxylic acid ester per Chapter 29 scope. Standard form for acrylic sheet/coating production.
Methyl Methacrylate Optical Grade for PMMA Lenses
Low-metal impurity MMA (<1 ppb Fe/Cu) specifically refined for cast acrylic sheet used in optical applications. Precisely classified under HTS 2916.14.2020 as pure methacrylic acid methyl ester. Meets stringent Chapter 29 chemical purity standards.
Methyl Methacrylate with 50 ppm Hydroquinone Inhibitor
Standard commercial MMA with precisely 50 ppm monomethyl ether hydroquinone (MEHQ) to maintain liquid state during global transport. HTS 2916.14.2020 per Chapter 29 note (f) allowance for transport stabilizers. Industry standard for resin manufacturers.