Oxides of boron; boric acids
Oxides of boron; boric acids
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 2810.00.00.00
Anhydrous Boric Oxide Powder
Anhydrous boric oxide (B2O3) is a white, glassy powder used in the production of borosilicate glass and as a flux in metallurgy. It falls under HTS 2810.00.00.00 as an oxide of boron, chemically defined as a pure inorganic compound of boron and oxygen. This high-purity form is essential for optical glass manufacturing.
Boric Acid Crystals (H3BO3)
Boric acid is a weak, monobasic Lewis acid of boron available in white, odorless crystals or powder form, used as an antiseptic and in fire retardants. It is explicitly classified under HTS 2810.00.00.00 as one of the boric acids per the heading description. Technical grade is common for industrial applications like glass fiber production.
Technical Grade Boric Acid Flakes
Technical grade boric acid flakes are produced by dehydration of borax and used in ceramics, fertilizers, and as a pH buffer in pools. Classified under HTS 2810.00.00.00 as boric acid, meeting Chapter 28's chemically defined criteria. Purity typically 99.5% minimum for industrial use.
Boron Trioxide Glass-Grade Powder
High-purity boron trioxide powder designed for borosilicate glass production, providing thermal resistance properties. It qualifies under HTS 2810.00.00.00 as an oxide of boron, pure B2O3 form. Used by manufacturers like Corning for labware and cookware.
Orthoboric Acid USP Grade
USP-grade orthoboric acid meets pharmaceutical standards for use in eye washes and as a preservative. Classified in HTS 2810.00.00.00 as boric acid, chemically defined per Chapter notes. High purity (99.8%+) ensures compliance for medical applications.
Granular Boric Acid for Insecticide
Granular boric acid specifically sized for roach and ant baits, acting as a stomach poison. Falls under HTS 2810.00.00.00 as pure boric acid before formulation into pesticides. Industrial packaging for pest control distributors.
Boric Oxide Sintered Pellets
Sintered boric oxide pellets used in nuclear reactor control rods and high-temperature ceramics. Classified as boron oxide under HTS 2810.00.00.00, meeting purity standards for Chapter 28. Formed without altering chemical composition.
Metaboric Acid Powder
Metaboric acid (HBO2), a dehydrated form of boric acid, used in flame retardants and catalysts. Included under HTS 2810.00.00.00 as a boric acid isomer, chemically defined. Less stable than orthoboric acid, requiring dry storage.
Boric Acid 99.9% Electronics Grade
Ultra-pure boric acid for semiconductor doping and plasma etching solutions. HTS 2810.00.00.00 classification as boric acid, with dopant-level purity. Used in microelectronics fabrication.
Boron Sesquioxide Fused Lump
Fused boric oxide lumps from thermal dehydration, used in specialty glass melting. Pure B2O3 classified under HTS 2810.00.00.00 as boron oxide. Irregular shapes from fusion process.