Pharmaceutical Grade Maleic Acid USP
Ultra-pure maleic acid meeting United States Pharmacopeia (USP) standards for pharmaceutical applications, classified under HTS 2917.19.23.00. Used as counterion in drug salt formation and synthesis intermediate for APIs. Remains classified as the pure chemical compound despite high purity standards.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If specifically imported as pharmaceutical intermediate with added stabilizers
Organic compounds used chiefly as intermediates in pharmaceutical synthesis may classify under Chapter 29 heading 2942.
If for other maleic acid derivatives not specifically named
Less specific 'other' subheading applies to maleic acid products not meeting exact 2917.19.23.00 criteria.
If when pre-packaged as pharmaceutical bulk active
Pharmaceutical preparations in bulk form may classify under Chapter 30 if meeting specific dosage criteria.
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Import Tips & Compliance
• Provide USP Certificate of Analysis and DMF reference if used in FDA-regulated pharmaceuticals
• Use low-density polyethylene (LDPE) liners in drums to prevent iron contamination affecting pharmaceutical purity
• Comply with FDA import alerts on color, odor, and heavy metals specifications unique to pharma grade
Related Products under HTS 2917.19.23.00
Maleic Acid (99% Purity, Industrial Grade)
Maleic acid is a dicarboxylic acid with the formula HO2CCH=CHCO2H, classified under HTS 2917.19.23.00 as an acyclic polycarboxylic acid. This high-purity industrial grade product is used in the production of unsaturated polyester resins, coatings, and agricultural chemicals. It meets Chapter 29 requirements for separate chemically defined organic compounds.
Maleic Acid Anhydride-Derived Maleic Acid
Maleic acid produced through hydrolysis of maleic anhydride, explicitly covered under HTS 2917.19.23.00 as 'maleic acid' regardless of production method. Used primarily in resin manufacturing and as a precursor for malic acid production. Qualifies as chemically defined acyclic polycarboxylic acid per Chapter 29 note (a).
Maleic Acid Flakes (Technical Grade)
Technical grade maleic acid supplied in flake form for industrial applications, classified under HTS 2917.19.23.00. The physical form (flakes vs. powder) does not affect chemical classification as maleic acid. Primarily used in polyester resin production and water treatment formulations.
Stabilized Maleic Acid for Transport
Maleic acid with added polymerization inhibitor (hydroquinone 50-200 ppm) per Chapter 29 note (f) for safe transport, classified under HTS 2917.19.23.00. Stabilizer prevents exothermic polymerization during shipping. Used in unsaturated polyester resin manufacturing.
Food Contact Grade Maleic Acid
Maleic acid meeting FDA 21 CFR 175.300 specifications for food contact applications, classified under HTS 2917.19.23.00. Used in resin production for food packaging and as processing aid. Purity exceeds 99.5% with low heavy metals.
Maleic Acid for Unsaturated Polyester Resins
High-reactivity maleic acid specifically produced for unsaturated polyester resin (UPR) manufacture, classified under HTS 2917.19.23.00. Optimized color (APHA <20) and acid number (390-410 mg KOH/g). Essential raw material for composites and gelcoats.