of 28 to 32 percent by weight (CAS No. 9004–70–0), presented in fiber drums each containing 85 kg, 100 kg, 110 kg or 120 kg of such nitrocellulose, the foregoing certified by the importer as made from at least 50 percent cotton linter or wood pulp and as having each such drum lined with an antistatic plastic bag and equipped with a coupling for mechanical unloading (provided for in subheading 3912.20.00) 1.0% No change No change On or before 12/31/2020 . 1042. Certain industrial nitrocellulose, damped with an alcohol content of 33 to 37 percent Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.58 Industrial grade nitrocellulose, having a nitrogen content of less than 12.4 percent on a dry weight basis, damped with an alcohol content of 33 to 37 percent by weight (CAS No. 9004–70–0), presented in fiber drums each containing 85 kg, 100 kg, 110 kg or 120 kg of such nitrocellulose, the foregoing certified by the importer as made from at least 80 percent cotton linters, wood pulp and ethanol, with such fiber drums each lined with an antistatic plastic bag and equipped with a coupling for mechanical unloading (provided for in subheading 3912.20.00) Free No change No change On or before 12/31/2020 . 1043. Sodium alginate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.59 Sodium alginate (CAS No. 9005–38–3) (provided for in subheading 3913.10.00) 0.4% No change No change On or before 12/31/2020 . 1044. Propylene glycol alginate (PGA) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.60 Propylene glycol alginates (CAS No. 9005–37–2) (provided for in subheading 3913.10.00) Free No change No change On or before 12/31/2020 . 1045. Alginic acid and other alginates Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.61 Alginic acid (CAS No. 9005–32–7), ammonium alginate (CAS No. 9005–34–9),