Zinc citrate

Synonyms: Zinc citrate, Zinc citrate tribasic, Tri-zinc dicitrate, Zinc citrate dihydrate, Citric acid zinc salt

In the crowded field of mineral supplements, zinc citrate has quietly become a preferred choice for formulators who need reliable bioavailability without the gastric irritation often associated with zinc sulfate. As consumers grow more educated about mineral forms, demand has shifted toward chelated and organic acid salts, and zinc citrate sits squarely in that sweet spot. It appears in multivitamin tablets, immune support gummies, oral care products, and even functional beverages, where its neutral taste and good tolerability give it a clear edge over older inorganic sources.

Zinc citrate is the zinc salt of citric acid, typically existing as a dihydrate with the formula C12H14O16Zn3. It is produced by reacting high-purity zinc oxide or zinc carbonate with citric acid in aqueous solution, followed by crystallization, filtration, and drying. The resulting white crystalline powder is odorless and has a mild, slightly acidic taste that is easy to mask in finished dosage forms. Unlike zinc sulfate, it does not promote the formation of free radicals in the stomach, which helps explain its gentler profile on the gastrointestinal tract.

The material is standardized to a zinc content of 31–34%, making it one of the more concentrated solid zinc sources available. Our zinc citrate is routinely assayed at ≥99.0% and is available in both dihydrate and anhydrous forms to suit different formulation needs. With tight control on heavy metals and particle size, it meets the stringent requirements of dietary supplement, pharmaceutical, and personal care applications across regulated markets.

製品の概要と成分

Zinc citrate is a coordination compound in which zinc ions are bound to citrate ligands, creating a stable, water-soluble complex. The dihydrate form contains approximately 31–34% elemental zinc, while the anhydrous form is slightly more concentrated. This high zinc density means less powder is needed per dose, which can be a real advantage in tablet compression and capsule filling where excipient load matters.

From a compositional standpoint, the product is essentially pure zinc citrate with limited residual moisture. It is not a chelate in the strict amino acid sense, but the citrate ligand does improve absorption compared to inorganic salts. The compound is compatible with a wide range of excipients, including cellulose, stearates, and common binders, and it performs well in both wet granulation and direct compression processes.

主な用途

• Dietary Supplements: Used in tablets, capsules, gummies, and powders for immune support, skin health, and general wellness. Its high zinc content and good tolerability make it ideal for daily multivitamins.
• Oral Care Products: Incorporated into toothpastes and mouthwashes for its ability to inhibit plaque formation and reduce halitosis. Zinc citrate delivers zinc ions that interfere with bacterial metabolism without altering taste.
• Functional Foods & Beverages: Added to fortified cereals, nutrition bars, and sports drinks where a neutral flavor and high solubility are required.
• Pharmaceutical Formulations: Used in prescription and OTC products for zinc supplementation, including lozenges and effervescent tablets.
• 動物栄養学: Included in feed premixes as a bioavailable zinc source for livestock and companion animals.
• Cosmetics & Personal Care: Found in deodorants and anti-dandruff shampoos for its antimicrobial and sebum-regulating properties.

品質と基準

包装・供給

• パッケージ: 25 kg net in fiber drums with double polyethylene liners. Custom packaging available upon request.
• 最小注文数量（MOQ）: 500 kg for standard orders; flexible for trial quantities.
• リードタイム: 3～5営業日（在庫品）
• ドキュメント: COA, MSDS, TDS, and nutritional analysis available. Additional regulatory support for USP/EP/BP compliance.
• ストレージ: Store in a cool, dry place away from direct sunlight. Retest period of 24 months when stored properly.

見積依頼

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