What Is Calcium Ascorbate Powder?
Calcium ascorbate powder is the calcium salt form of ascorbic acid — more commonly recognized as vitamin C. Produced through the neutralization of ascorbic acid with a calcium source, this compound delivers a buffered, non-acidic form of vitamin C that is notably gentler on the digestive system compared to standard ascorbic acid. With a minimum purity of 98%, our calcium ascorbate powder meets the exacting standards required by food manufacturers, nutraceutical formulators, and pharmaceutical producers worldwide.
What distinguishes calcium ascorbate from conventional vitamin C is its superior chemical stability and enhanced bioavailability. The buffered pH profile — typically between 6.8 and 7.4 — makes it far less corrosive to tooth enamel and gastric lining, offering a significant formulation advantage for sensitive consumer segments including children, the elderly, and individuals with gastrointestinal sensitivities.
Key Product Specifications
| Parameter | Specification |
|---|---|
| Appearance | White crystalline powder |
| Purity | ≥ 98% |
| pH | 6.8 ~ 7.4 |
| Specific Rotation | +95° ~ +97° |
| Fluoride | ≤ 0.001% |
| Total Arsenic (As) | ≤ 3 mg/kg |
| Lead (Pb) | ≤ 10 mg/kg |
| Oxalic Acid Test | Qualified |
These specifications are verified through rigorous in-house and third-party laboratory testing, ensuring every batch meets both food-grade and pharmaceutical-grade quality benchmarks.
Chemical & Physical Characteristics
Calcium ascorbate powder presents as a fine, white to off-white crystalline powder with no perceptible odor. Key physicochemical properties relevant to formulators and manufacturers include:
- Molecular Formula: C₁₂H₁₄CaO₁₂
- Molecular Weight: 426.35 g/mol
- Solubility: Freely soluble in water; slightly soluble in ethanol
- pH (1% aqueous solution): 6.8 – 7.4
- Form: Fine, free-flowing powder suitable for direct blending, encapsulation, and tablet compression
- Hygroscopicity: Moderately hygroscopic; sealed packaging is recommended
The near-neutral pH of calcium ascorbate makes it an exceptionally compatible ingredient in multi-component formulations where pH sensitivity is a concern, such as mineral blends, effervescent tablets, and liquid nutritional products.
Production Process & Quality Control
At Extract Makers, calcium ascorbate powder is manufactured in a fully GMP-compliant production facility using controlled synthesis processes that ensure consistent purity, particle size uniformity, and batch-to-batch reproducibility. The manufacturing process involves the precise neutralization of pharmaceutical-grade L-ascorbic acid with food-grade calcium carbonate or calcium hydroxide under controlled temperature and pH conditions, followed by crystallization, drying, and milling to achieve the desired powder characteristics.
Our quality assurance protocols encompass:
- In-process quality checks at every critical production stage
- Heavy metal screening (arsenic, lead, mercury, cadmium)
- Microbiological testing in accordance with food safety standards
- Identity verification via HPLC and optical rotation analysis
- Third-party certificate of analysis available upon request
This systematic approach to quality management guarantees that our calcium ascorbate powder consistently meets the requirements of international regulatory authorities and pharmacopeial standards.
Certifications & Compliance Standards
All products manufactured and supplied by Extract Makers are produced under the following internationally recognized certifications and quality frameworks:
- GMP (Good Manufacturing Practice) — facility and process compliance
- HACCP — hazard analysis and critical control points
- ISO 9001 — quality management system
- ISO 22000 — food safety management system
- Kosher Certified — suitable for kosher dietary requirements
- Halal Certified — compliant with halal standards
- FDA Registration — U.S. Food and Drug Administration facility registration
These certifications represent our commitment to delivering raw materials that are safe, traceable, and compliant across global markets including the United States, European Union, Southeast Asia, and beyond.
Functional Benefits of Calcium Ascorbate
Antioxidant & Food Preservation Properties
Calcium ascorbate is widely recognized as an effective antioxidant and preservative in the food and beverage industry. By scavenging free radicals and inhibiting oxidative degradation, it helps to:
- Extend product shelf life by retarding lipid oxidation and microbial spoilage
- Preserve color integrity in fresh-cut fruits, vegetables, meat products, and beverages
- Maintain flavor stability by preventing off-note development caused by oxidative rancidity
- Support clean-label formulation as a naturally derived, consumer-accepted ingredient
As health-conscious consumers increasingly scrutinize ingredient labels, calcium ascorbate offers manufacturers a natural, recognizable preservative alternative that aligns with clean-label and "free-from" product positioning strategies.
Nutritional & Health Benefits
As a bioavailable form of vitamin C with the added benefit of calcium, calcium ascorbate delivers dual nutritional functionality:
- Immune system support: Vitamin C plays a critical role in stimulating the production and function of white blood cells, enhancing the body's natural defense mechanisms
- Collagen synthesis: Essential for the repair and regeneration of connective tissues, skin, cartilage, and wound healing
- Antioxidant protection: Neutralizes reactive oxygen species, reducing oxidative stress at the cellular level
- Bone and dental health: The calcium component contributes to maintaining bone mineral density and supporting healthy teeth structure
- Iron absorption: Enhances non-heme iron absorption, making it a valuable co-ingredient in iron supplementation formulas
- Skin health: Supports keratinocyte differentiation and photoprotection in cosmetic and nutraceutical applications
The dual-nutrient profile of calcium ascorbate — providing both vitamin C and calcium in a single ingredient — offers a meaningful formulation efficiency advantage for supplement developers.
Industry Applications
Calcium ascorbate powder's versatile functional profile makes it applicable across a broad range of industries and product categories:
Dietary Supplements & Nutraceuticals
- Vitamin C tablets, capsules, and softgels
- Multivitamin and mineral complexes
- Immune support formulas
- Sports nutrition and recovery products
- Children's chewable vitamins and gummies
- Effervescent vitamin C beverages
Food & Beverage Manufacturing
- Fruit juices, nectars, and functional beverages
- Fresh-cut produce and minimally processed foods
- Bakery products requiring ascorbic acid as a dough conditioner
- Meat and seafood processing as a color stabilizer
- Dairy and plant-based beverage fortification
- Confectionery and nutritional bars
Pharmaceutical Applications
- Oral solid dosage forms (tablets and capsules)
- Pharmaceutical-grade vitamin C preparations
- Combination mineral-vitamin formulations
- Nutraceutical APIs requiring non-acidic vitamin C delivery
Cosmetic & Personal Care
- Topical antioxidant serums and creams
- Skin brightening and anti-aging formulations
- Hair care products with nutritional fortification claims
Formulation Compatibility & Stability Considerations
Calcium ascorbate powder demonstrates strong compatibility with a wide range of excipients and co-ingredients commonly used in dietary supplement and food fortification applications. Formulators should note the following practical considerations:
- Stability: Significantly more stable than ascorbic acid under elevated temperature and humidity conditions. Suitable for use in formulations with extended shelf-life requirements.
- pH compatibility: The near-neutral pH minimizes reactivity with pH-sensitive active ingredients in complex formulations.
- Compressibility: The powder flow properties are suitable for direct compression tableting with standard excipients.
- Moisture sensitivity: Being moderately hygroscopic, calcium ascorbate should be processed and stored under controlled humidity conditions (ideally below 60% relative humidity).
- Incompatibilities: Avoid prolonged contact with strong oxidizing agents, iron salts, and copper compounds, which may accelerate degradation.
Storage Recommendations
To preserve product integrity and ensure shelf-life compliance, calcium ascorbate powder should be stored under the following conditions:
- Temperature: Store in a cool, dry environment, ideally below 25°C
- Humidity: Keep away from moisture; maintain relative humidity below 60%
- Light exposure: Store away from direct sunlight and UV sources
- Container integrity: Keep original packaging tightly sealed when not in use
- Shelf life: 24 months from the date of manufacture under recommended storage conditions
Proper storage is critical to maintaining the antioxidant activity and purity specification of the product throughout its stated shelf life.
Packaging Options
Extract Makers offers flexible packaging configurations to accommodate a wide range of order volumes and end-use requirements:
- 1 kg – 5 kg: Double-layer aluminum foil bags with inner food-grade polyethylene liner
- 10 kg – 20 kg: Reinforced cardboard cartons with moisture barrier lining
- 10 kg – 30 kg: Fiber drums with aluminum foil inner bag for bulk shipments
Private Label & Custom Packaging
For brand owners, distributors, and retailers looking to bring their own branded vitamin C products to market, Extract Makers provides a comprehensive private label and custom packaging service. We can produce finished packaging with your logo, branding, nutritional panel, and regulatory labeling requirements — ready for direct retail or e-commerce distribution. This service eliminates the need for secondary packaging operations and significantly reduces time-to-market.
Shipping & Logistics
Extract Makers supports flexible international shipping arrangements to accommodate varying order volumes and destination requirements:
- Small and sample orders (below 1 ton): Available via DHL, FedEx, UPS, EMS, and other international express courier services
- Large volume orders: Sea freight (FCL/LCL) and railway freight options available to major global destinations
- Export documentation: Full export documentation including commercial invoice, packing list, certificate of origin, and certificate of analysis provided with every shipment
Our logistics team coordinates with freight forwarders and customs brokers to ensure smooth customs clearance and timely delivery to your facility.
Free Samples Available
We understand that procurement decisions for raw material ingredients require thorough quality evaluation. Extract Makers offers complimentary samples (10 g – 20 g) of calcium ascorbate powder for qualified buyers and formulators. Sample requests are subject to confirmation for premium-grade materials.
Each sample is accompanied by a full certificate of analysis and technical data sheet, giving your quality control and R&D teams everything needed to conduct a comprehensive material evaluation.
After-Sales Support & Quality Guarantee
Extract Makers is committed to a long-term supplier relationship built on transparency and accountability:
- Product warranty: All products are guaranteed against defects in quality for the duration of their stated shelf life (24 months)
- Return & refund policy: Hassle-free returns accepted for products that do not meet specification; refunds issued proportionally based on returned quantity
- Technical support: Our application chemistry team is available to assist with formulation questions, regulatory documentation, and specification customization
Why Partner with Extract Makers?
Manufacturers, importers, brand owners, and distributors across the globe choose Extract Makers as their calcium ascorbate powder supplier for the following reasons:
- Consistent 98%+ purity backed by rigorous quality testing and full traceability
- Multi-standard certifications accepted in major regulated markets (US, EU, Southeast Asia, Middle East)
- Flexible MOQ and packaging tailored to the needs of both emerging brands and established manufacturers
- Dual-nutrient ingredient efficiency delivering both vitamin C and calcium in a single, stable compound
- Dedicated export experience with proven logistics capabilities for global supply chain integration
- Private label capability enabling faster route to market for brand development clients
Contact Us for Pricing & Bulk Orders
If you are looking to source bulk calcium ascorbate powder for food manufacturing, dietary supplement production, pharmaceutical applications, or private label development, we invite you to reach out to our team for a competitive quotation, product documentation, or a free sample request.
📧 Email: [email protected]
Extract Makers maintains a product portfolio of over 2,000 raw material ingredients across plant extracts, nutritional raw materials, food additives, and fine chemicals. If you are unable to find a specific product on our website, please contact us directly — our sourcing team will be happy to assist with your requirements.
