Methyl Methacrylate Optical Grade for PMMA Lenses from China
Optical-grade methyl methacrylate with ultra-low metal impurities (below 1 ppb for iron and copper) is refined specifically for cast acrylic sheet used in lenses and other optical applications. Despite its specialized use, it remains a chemically defined ester of methacrylic acid and is classified under tariff item 2916.14.00.
Duty Rate — China → Canada
0%
Import Tips
• Keep certificates of analysis showing impurity levels, as customs may verify the 'optical grade' claim against Chapter 29's purity standards
• The product must not contain additives that render it suitable for a specific use beyond general monomer purposes
• Consider applying for a ruling from the CBSA if you regularly import this grade, to avoid classification disputes