The product is a chemical. TRIS Methacrylate/ TRIS MA/ TX-101 CAS Number: 17096-07-0 It contributes to the oxygen permeability of contact lenses and additionally it acts as a strengthening agent. It is presented as a clear liquid.

General Interpretative Rules 1 & 6 of the Combined Nomenclature Notes to Chapter 29 of the Combined Nomenclature General Note (A) to Harmonised System Explanatory Notes Harmonised System Explanatory Notes to heading 2931 Text to codes 2931, 2931 90 00 & 2931 9000 90 ECICS Information provided by the Applicant