The product is a chemical. BIS(3-METHACRYLAMIDOPROPYL)POLYDIMETHYLSILOXANE (Ma2d37) CAS Number: 1222098-32-9 This product is used in the manufacture of contact lens. It is presented as a clear liquid packaged in a white plastic bucket. The container weight is 10kg.

G.I.R. 1 & 6. Notes to Section VII & Chapter 39. HSEN to heading 3910. Text to code 3910, 3910 00, 3910 00 00, 3910 00 00 90. Lab advice R24A0178 and Re-issue of BTI 21NT-14-1367-DEC.