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Sodium Citrate Dihydrate USP

Sodium citrate dihydrate is the hydrated form of trisodium citrate (C6H5Na3O7·2H2O), a sodium salt of citric acid classified under HTS 2918.15.1000 as a salt of citric acid with alcohol function. It is widely used as a pharmaceutical buffering agent and anticoagulant in blood collection tubes.

Import Duty Rates by Country of Origin

Origin Country	MFN Rate	Ch.99 Surcharges	Total Effective Rate
🇨🇳China	6.5%	+35.0%	41.5%
🇲🇽Mexico	6.5%	+10.0%	16.5%
🇨🇦Canada	6.5%	+10.0%	16.5%
🇩🇪Germany	6.5%	+10.0%	16.5%
🇯🇵Japan	6.5%	+10.0%	16.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2918.15.50.00Lower: 38.7% vs 41.5%

If trisodium citrate anhydrous form

Anhydrous sodium citrate falls under the general esters and salts subheading rather than the specific sodium citrate provision.

3824.99Lower: 15% vs 41.5%

If imported as buffered solution for lab use

Aqueous solutions of sodium citrate for specific lab applications may classify as chemical preparations rather than pure compounds.

3002.90Lower: 10% vs 41.5%

If pre-mixed as blood anticoagulant solution

Ready-to-use immunological or blood collection preparations containing sodium citrate classify under Chapter 30 pharmaceuticals.

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Import Tips & Compliance

• Verify USP/EP grade certification and provide Certificate of Analysis (CoA) for FDA compliance

• Ensure proper labeling of dihydrate content and purity levels above 99% as required for pharma use

• Avoid misclassification as food additive; pharma grade requires drug master file documentation

Related Products under HTS 2918.15.10.00

Trisodium Citrate Powder BP

Trisodium citrate BP grade is a high-purity sodium salt of citric acid used in European pharmacopeia standards, falling under HTS 2918.15.1000 due to its classification as a citric acid salt. This fine white powder serves as a pH regulator in injectable formulations and effervescent tablets.

Pharma Grade Sodium Citrate Granules

Granular sodium citrate specifically manufactured for pharmaceutical applications, classified under HTS 2918.15.1000 as the sodium salt of citric acid. These granules offer improved flowability for tablet compression and direct capsule filling in drug manufacturing.

Sodium Citrate FCC Grade

Food Chemicals Codex (FCC) grade sodium citrate is a purified trisodium citrate salt suitable for food and pharma applications, classified specifically under HTS 2918.15.1000. It functions as a sequestrant, emulsifier, and acidity regulator in beverages and processed foods.