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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing impurities or mixed with other substances
Impure boron compounds or mixtures fall under borates of heading 2840, not pure oxides.
If prepared as a chemical mixture for specific industrial use
Formulations or preparations of chemicals not elsewhere specified go to heading 3824.
If processed into sodium borate (borax)
Sodium and metal borates are classified separately under heading 2830.
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Import Tips & Compliance
• Verify purity levels exceed 99% to confirm classification as chemically defined oxide under Chapter 28 notes
• Provide chemical analysis certificates to avoid misclassification as boric acid or industrial mixtures
• Ensure packaging prevents moisture absorption, as hydration could reclassify it as boric acid
Related Products under HTS 2810.00.00.00
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.