Dicalcium Phosphate Dihydrate USP Grade
Calcium hydrogenorthophosphate dihydrate (CaHPO4·2H2O) in USP pharmaceutical grade, used as a calcium and phosphorus supplement in tablets and capsules. It falls under HTS 2835.25.00.00 as a chemically defined phosphate of calcium, meeting Chapter 28 note requirements for inorganic compounds. Purity exceeds 98% with low heavy metals for direct compression in nutraceuticals.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If fed to animals in bulk
Phosphates of calcium for animal feed use fall under 2835.24, distinct from human pharmaceutical or food grades.
If mixed into animal feed fertilizers
When combined with other minerals for agricultural feed, it shifts from pure chemical to Chapter 31 fertilizers.
If blended with excipients for retail supplement packs
Prepared mixtures for retail sale as dietary supplements are classified as chemical preparations in 3824, not pure compounds.
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Import Tips & Compliance
• Obtain USP certificate of analysis for FDA compliance; ensure COA verifies dihydrate form and particle size for tableting
• Declare exact water content to avoid reclassification as anhydrous under 2835.25
Related Products under HTS 2835.25.00.00
Feed Grade Dicalcium Phosphate 18% Phosphorus
Granular dicalcium phosphate with minimum 18% phosphorus and 21% calcium, designed for livestock mineral supplements to prevent deficiencies. Classified under HTS 2835.25.00.00 as pure calcium hydrogenorthophosphate, excluding feed-specific preparations. Low fluoride content ensures safety for poultry and swine rations.
Anhydrous Dicalcium Phosphate Food Grade
Pure anhydrous CaHPO4 (without water of hydration) GRAS-listed for use as a dough conditioner, nutrient supplement, and anti-caking agent in baked goods. Falls under HTS 2835.25.00.00 as chemically defined calcium hydrogenorthophosphate per Chapter 28 notes. Fine powder form with 97% minimum assay.
Dicalcium Phosphate Technical Grade Powder
Technical grade calcium hydrogenorthophosphate used in water treatment as a corrosion inhibitor and in ceramics as a flux. HTS 2835.25.00.00 applies to this chemically pure inorganic phosphate compound. Medium particle size for industrial dispersion.
Pharmaceutical Dicalcium Phosphate Granules
Direct compressible granules of dicalcium phosphate dihydrate for high-speed tablet pressing in vitamin and mineral formulations. Precisely matches HTS 2835.25.00.00 as calcium hydrogenorthophosphate, USP/EP compliant. Uniform 100-200 micron size distribution.
Dicalcium Phosphate for Toothpaste Abrasive
Precipitated dicalcium phosphate optimized as mild abrasive in oral care formulations, with controlled particle shape for polishing without enamel damage. HTS 2835.25.00.00 covers this pure chemical form before cosmetic incorporation. High whiteness index >95%.
Dicalcium Phosphate Fertilizer Grade Pellets
Pelletized calcium hydrogenorthophosphate providing slow-release phosphorus for soil amendment in agriculture. Still classified under HTS 2835.25.00.00 as chemically defined compound, not yet a Chapter 31 fertilizer mixture. 16-18-0 NPK equivalent analysis.