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Specifications
| Sensory index: | White odorless crystal or crystalline powder |
| Identification test: | Pass the test |
| Zinc (on dry basis): | 31.3% min |
| Loss on drying: | 1.0% max |
| Chloride (calculated as Cl): | 0.05% max |
| Sulfate (calculated as SO₄): | 0.05% max |
| Iron: | 50 mg/kg max |
| Lead: | 5.0 mg/kg max |
| Arsenic (calculated as As): | 2.0 mg/kg max |
| Cadmium: | 5.0 mg/kg max |
Applications
1. Dietary Supplements
Commonly used in zinc tablets, capsules, lozenges, and powders.
Helps address zinc deficiency, which can affect immunity, growth, wound healing, and reproductive health.
Preferred in supplements for its relatively high bioavailability and neutral flavor compared to other zinc salts.
2. Oral Care Products
A key ingredient in toothpaste, mouthwash, and dental gels.
Provides:
Antibacterial activity to help control plaque and gingivitis
Anti-halitosis effects by neutralizing sulfur compounds that cause bad breath
Tartar control, reducing calculus formation on teeth
3. Food Fortification
Used to fortify functional foods and beverages, especially in regions with widespread micronutrient deficiencies.
Recognized as a safe source of zinc supplementation in foods (GRAS status by the FDA).
4. Pharmaceutical and Cosmetic Uses
Included in topical creams, lotions, and ointments for its antimicrobial and skin-soothing properties.
Supports the healing of minor wounds, rashes, and acne.
5. Veterinary and Animal Nutrition
Added to pet food and livestock feed to support growth, immunity, and reproductive health.
Used in animal oral care products as well.
Benefits
1. High Zinc Content and Bioavailability
Zinc citrate provides over 30% elemental zinc, with good absorption when taken orally.
Effective in supporting enzyme function, DNA synthesis, immune defense, and cell division.
2. Gentle on the Stomach
Better gastrointestinal tolerance than other zinc salts like zinc sulfate, with fewer side effects such as nausea or metallic taste.
3. Oral Health Support
Acts directly on oral bacteria and volatile sulfur compounds, improving breath freshness and gum health.
Shown to be effective in reducing plaque and inhibiting tartar formation in dental studies.
4. Antioxidant and Anti-inflammatory Properties
Zinc plays a critical role in protecting cells from oxidative stress, aiding in tissue repair, and modulating the inflammatory response.
5. Versatility Across Industries
Functions as a nutrient, antimicrobial, and stabilizer, allowing it to be used in supplements, personal care, pharmaceuticals, and animal health.
Conclusion
Zinc citrate (CAS 546-46-3) is a well-tolerated, bioavailable form of zinc used in dietary supplements, oral care products, fortified foods, and topical formulations. Its high zinc content, antibacterial effects, and broad compatibility with human and animal health products make it a popular and effective ingredient. With benefits ranging from immune support and wound healing to oral hygiene and antioxidant protection, zinc citrate continues to be a vital compound in health and wellness applications.
