2-Ethyl-2-(hydroxymethyl)propane-1,3-diol (Trimethylolpropane)
Acyclic alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives: > Other polyhydric alcohols: > 2-Ethyl-2-(hydroxymethyl)propane-1,3-diol (Trimethylolpropane)
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2905.41.00.00
Trimethylolpropane (TMP) Technical Grade
Trimethylolpropane (TMP), chemically 2-Ethyl-2-(hydroxymethyl)propane-1,3-diol, is a triol used as a building block in polyurethane and alkyd resin production. It falls under HTS 2905.41.00.00 as a separate chemically defined acyclic polyhydric alcohol. This technical grade product is supplied at 97-99% purity for industrial synthesis.
High Purity Trimethylolpropane (TMP) 99.5%
High purity TMP (2-Ethyl-2-(hydroxymethyl)propane-1,3-diol) at 99.5% is used in radiation-curable coatings and adhesives. Classified under HTS 2905.41.00.00 as a pure acyclic polyhydric alcohol per chapter notes. Supplied as white crystalline flakes or molten.
Trimethylolpropane Stabilized with 0.1% BHT
TMP stabilized with 0.1% butylated hydroxytoluene (BHT) for preservation during storage and transport. Allowed under HTS 2905.41.00.00 per chapter note 1(f) as stabilizer necessary for preservation. Used in alkyd paint production.
Molten Trimethylolpropane (TMP)
TMP supplied in heated tankers as molten liquid at 80-100°C for direct industrial feed. Remains under HTS 2905.41.00.00 as the same chemically defined compound in transport form. Primary use in flexible polyurethane foams.
Trimethylolpropane Flakes 98% Purity
Crystalline TMP flakes at 98% purity, packaged in 25kg bags for resin manufacturing. Classified HTS 2905.41.00.00 as the named acyclic polyhydric alcohol despite minor impurities. Key intermediate for saturated polyesters.
TMP with Anti-Dusting Agent
Powdered TMP treated with 0.05% silica anti-dusting agent for safe handling. Permitted under HTS 2905.41.00.00 by chapter note 1(g) for identification/safety without specific use adaptation. Used in powder coatings.
Distilled Trimethylolpropane USP Grade
Ultra-pure distilled TMP meeting USP standards for pharmaceutical intermediates. HTS 2905.41.00.00 applies to this chemically defined polyhydric alcohol. Used in drug synthesis and cosmetics.
Trimethylolpropane in 20% Aqueous Solution
20% TMP dissolved in water for safe transport, per chapter note 1(d). Remains HTS 2905.41.00.00 as the named compound in aqueous form. Used in waterborne coatings.
Industrial Trimethylolpropane Bulk Drums
TMP in 200kg steel drums for large-scale production of lubricants and plasticizers. HTS 2905.41.00.00 for this polyhydric alcohol building block. Purity 97% min.
Pharma-Grade Trimethylolpropane Crystals
GMP-produced TMP crystals for pharmaceutical synthesis, 99.9% pure. Classifies under HTS 2905.41.00.00 as defined organic compound. Precursor for drug delivery systems.