Section 07 Plastics and articles thereof; rubber and articles thereof 39 Plastics and articles thereof 39 07 Polyacetals,polyethers and epoxide resins;polycarbonates... polyester, in primary forms 39 07 21 Bis(polyoxyethylene) methylphosphonate 39 07 21 00 Bis(polyoxyethylene) methylphosphonate Commodity Code Description 39 07 21 00 000 Bis(polyoxyethylene) methylphosphonate