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Magnesium Gluconate

Magnesium gluconate, magnesium salt of gluconic acid, qualifies under additional U.S. note 3 as an aromatic carboxylic acid with oxygen function. Classified HTS 2918.99.4300 for these specific organic metal salts. Used in dietary supplements and medical treatments.

Import Duty Rates by Country of Origin

Origin Country	MFN Rate	Ch.99 Surcharges	Total Effective Rate
🇨🇳China	6.5%	+25.0%	31.5%
🇲🇽Mexico	6.5%	—	6.5%
🇨🇦Canada	6.5%	—	6.5%
🇩🇪Germany	6.5%	—	6.5%
🇯🇵Japan	6.5%	—	6.5%

Alternative Classifications

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

2939Lower: 16.5% vs 31.5%

If vegetable alkaloid salts

If derived from plant sources with alkaloid traces, may classify under natural compounds.

3824.99Lower: 15% vs 31.5%

If tableted supplement form

Retail-packed supplements become mixtures in Chapter 38.

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Import Tips & Compliance

• Include heavy metal test results for supplement-grade imports

• Declare exact stoichiometry to distinguish from coordination compounds

Related Products under HTS 2918.99.43.00

Sodium Gluconate

Sodium gluconate is the sodium salt of gluconic acid, an aromatic carboxylic acid with additional oxygen function as defined in additional U.S. note 3 to section VI. It is chemically defined and falls under HTS 2918.99.4300 due to its classification as a product specified in that note for tariff purposes. Commonly used as a chelating agent in detergents and concrete admixtures.

Ferrous Gluconate

Ferrous gluconate is the iron(II) salt of gluconic acid, qualifying as an aromatic carboxylic acid with additional oxygen function per additional U.S. note 3. Falls under HTS 2918.99.4300 for tariff reporting of these specified organic salts. Primarily used as an iron supplement in nutritional products.

Gluconic Acid 50% Solution

A 50% aqueous solution of gluconic acid, a chemically defined carboxylic acid with additional oxygen functions, described in additional U.S. note 3 to section VI. Classified in HTS 2918.99.4300 as it meets criteria for solutions necessary for transport/safety without altering general use. Used in cleaning, food, and pharmaceutical applications.

Potassium Gluconate Powder

Potassium gluconate powder is the potassium salt of gluconic acid, an aromatic polycarboxylic acid with oxygen functions as listed in additional U.S. note 3. HTS 2918.99.4300 covers this chemically pure organic salt product. Applied in food fortification and buffering agents.

Zinc Gluconate Lozenges Base

Zinc gluconate as pure chemical for lozenge production, an aromatic oxygen-function carboxylic acid salt per U.S. note 3. HTS 2918.99.4300 applies to this bulk ingredient before final formulation. Essential for cold remedy supplements.

Glucono-Delta-Lactone

Glucono-delta-lactone (GDL) is the lactone form of gluconic acid, chemically defined under additional U.S. note 3 as an oxygen-function carboxylic derivative. Falls under HTS 2918.99.4300 for these specified cyclic forms. Used as sequestrant and leavening agent in food.