Calcium Ascorbate--Sunway (Hangzhou) Biotechnology Co., Ltd.

Overview

Product Overview & Core Technical Identity

SUNWAY supplies high-purity Food Grade Calcium Ascorbate (Vitamin C Calcium Salt, E302) fully compliant with GB 1886.43-2015, USP and JECFA standards. It is a dual-functional nutritional raw material integrating vitamin C supplementation and calcium fortification, with neutral pH value, mild taste and better oxidation resistance than pure L-Ascorbic Acid. Our product adopts advanced synthesis & recrystallization process, featuring ultra-low heavy metal and solvent residues, stable batch consistency, and excellent water solubility. Every batch completes full index testing and 12-month sealed sample retention to realize full quality traceability. Mixed consolidated shipment with other vitamin raw materials, mineral salts and amino acids is supported to lower customers' integrated procurement & logistics costs.

Technical Identity

Test Items	Standards	Test Results
Appearance	White to slightly yellow crystalline powder	Qualified
Identification	Positive reaction for ascorbate & calcium ion	Qualified
Specific Optical Rotation	+95 deg ~ +97 deg	+96.1 deg
pH (10% Water Solution)	6.8 ~ 7.4	6.9
Clarity of Solution	Clear solution	Clear
Colour of Solution	Not deeper than BY6 color standard	< BY6
Assay (C12H18CaO14)	99.0% ~ 100.5%	99.9%
Loss on Drying	<=0.1%	0.03%
Fluorides	<=10.0 mg/kg	Conforms
Iron (Fe)	<=2.0 mg/kg	Conforms
Copper (Cu)	<=5.0 mg/kg	Conforms
Lead (Pb)	<=0.5 mg/kg	Conforms
Arsenic (As)	<=1.0 mg/kg	Conforms
Cadmium (Cd)	<=0.5 mg/kg	Conforms
Mercury (Hg)	<=0.1 mg/kg	Conforms
Residual Solvents	<=3000 mg/kg	Conforms
Total Aerobic Plate Count	<=1000 CFU/g	Conforms
Moulds & Yeasts	<=100 CFU/g	Conforms
Coliforms	<=0.92 MPN/g	Conforms
Salmonella (per 25g)	Not Detected	Conforms
Staphylococcus Aureus (per 25g)	Not Detected	Conforms

Functions

Physiological Functions & Industry Application Logic

Calcium Ascorbate is a buffered ascorbate salt combining vitamin C and bioavailable calcium, with dual nutritional value and superior processing stability compared to free ascorbic acid:

Dual Nutritional Fortification (VC + Calcium) It simultaneously supplies water-soluble vitamin C and absorbable calcium ions. Vitamin C promotes collagen synthesis, enhances immunity and anti-oxidation; calcium supports bone, tooth and neuromuscular health, ideal for dual-fortified nutritional formulas targeting children, pregnant women and the elderly.

Mild Buffered pH & Excellent Stability Neutral aqueous solution avoids strong acidity of pure VC, will not cause corrosion to production equipment or destroy protein/milk protein in formulas; slower oxidation & discoloration during high-temperature baking, sterilization and long-term storage.

Powerful Water-Soluble Antioxidant Acts as natural food antioxidant & color-protecting agent, inhibit enzymatic browning of fruits, vegetables and baked goods, extend shelf life of meat & dairy products, prevent lipid peroxidation.

Animal Anti-Stress Nutrition Supplement VC and calcium for livestock & aquatics, relieve breeding & transportation oxidative stress, improve eggshell quality, fur gloss and young animal survival rate, reduce feed deterioration.

Cosmetic Skin Conditioning Water-soluble antioxidant raw material for skincare, neutral pH reduces skin irritation, scavenge free radicals, brighten dull complexion and repair epidermal barrier.

Key Property Reminder: Calcium Ascorbate is less acid-sensitive than L-Ascorbic Acid, but long-term exposure to strong light, high humidity and heavy metal ions will accelerate oxidation discoloration.

Supply

Sunway Packaging, Supply & Delivery Capacity

Standard Packaging Specifications

Small Trial Batch: 5kg double-layer moisture-proof light-shield aluminum foil sealed bag for lab formulation testing

Industrial Bulk Shipment: 25kg opaque fiber drum with inner PE anti-hygroscopic liner, dust-proof and anti-degradation for long sea & land transit

Custom Service: Private label printing, customized mesh fineness adjustment, compound vitamin-mineral premix packaging for long-term OEM manufacturers

Stable Spot Inventory & Production Capacity

SUNWAY maintains year-round sufficient spot stock of food-grade Calcium Ascorbate without seasonal stockout risks. We establish long-term strategic cooperation with NHU and other certified synthesis manufacturers, independent separated stock zones for food/feed grades to avoid cross-contamination, stable monthly output fully meets mass procurement demand of food factories, supplement brands and feed mills.

Mixed Consolidated Shipment Support

Calcium Ascorbate can be consolidated with other VC derivatives, multi-vitamins, calcium lactate and mineral salts into one full container, eliminating separate delivery charges and cutting customers' total procurement & warehouse management costs.

Global Export Logistics & Lead Time

Main Export Regions: Western Europe, Southeast Asia, North America, Latin America, Middle East

Professional logistics team with rich customs clearance experience for food additive cargo

Sample Order Lead Time: 1-3 working days after deposit confirmation

Bulk Industrial Order Lead Time: 7-10 working days after deposit payment

Shipment Options: Sea freight, air freight, customer-designated forwarder, full real-time order tracking service

Applications

Authorized Industrial Application Scenarios

All applications comply with GB 14880, FCC, JECFA and EU food safety regulations:

4.1 Functional Food & Beverage Fortification

Applicable Finished Goods: Fortified milk powder, solid nutrition drinks, fruit juices, sports drinks, instant cereal powder, baked biscuits Core Matching Advantages: Neutral pH does not damage milk protein, stable during pasteurization & baking, dual VC-calcium nutrition supplement without sour taste.

4. Nutraceutical & Dietary Supplements

Applicable Finished Goods: VC+calcium chewable tablets, multi-mineral vitamin sachets, prenatal nutrition granules, anti-fatigue oral powder Core Value: Gentle stomach irritation compared to pure ascorbic acid, excellent compressibility for tableting, good compatibility with calcium citrate, magnesium lactate and other minerals.

4. Food Antioxidant & Color Fixative

Applicable Finished Goods: Canned fruits & vegetables, cured meat products, edible oil, jam, jelly Core Value: Inhibit enzymatic browning and lipid oxidation, retain natural fruit color without harsh acid flavor.

4. Animal Feed Additives

Applicable Finished Goods: Piglet starter feed, laying hen premix, fish & shrimp aquatic feed, pet nutrition powder Core Value: Alleviate breeding stress, improve eggshell hardness and animal immunity, delay feed rancidity.

4. Mild Cosmetic Raw Materials

Applicable Finished Goods: Gentle brightening toner, repairing facial mask, sensitive skin moisturizer Core Value: Neutral pH non-irritating, water-soluble antioxidant for daily skincare formulations.

Quality

Full-Cycle QC & Compliance Credentials

SUNWAY Four-Stage Full Process Quality Control System

Raw Material Incoming Inspection: All crude Calcium Ascorbate passes HPLC assay, specific rotation and heavy metal full testing before warehousing; unqualified materials are strictly rejected.

Intermediate Process Monitoring: Real-time temperature & humidity control during recrystallization and drying; regular sampling test of moisture and solution clarity.

Finished Product Full-Index Detection: Every batch completes all test items aligned with GB 1886.43-2015, covering assay, optical rotation, heavy metals and full microbial panel.

12-Month Batch Sample Retention Mechanism: Light-proof sealed representative samples preserved for 12 months to support full quality traceability for any after-sales quality verification.

Complete Export Documents Provided Per Shipment

Official Batch COA fully aligned with GB 1886.43-2015, USP & JECFA

MSDS / UN GHS Global Safety Data Sheet

TDS Technical Datasheet

Non-GMO & Allergen-Free Statement

Halal & Kosher certification supporting documents upon request

Global Compliance Standards

Food Grade complies with China GB 1886.43-2015, GB14880, USP, JECFA & FCC; Feed Grade conforms to national feed additive specifications. Separate heavy metal & microbial limit standards for food and feed grades to satisfy cross-border import inspection requirements.

Storage

Storage, Handling & Shelf Life Guidance

Standard Storage Environment

Store unopened intact packaging in cool, dry, fully light-proof warehouse with controlled temperature 10-25C, relative humidity <=60%. Strictly isolate from direct sunlight, high-temperature equipment and oxidizing chemical reagents.

Post-Opening Handling Tips

Seal packaging tightly with moisture-proof tape immediately after each use, and finish consumption within 30 days. Transfer residual powder into light-proof foil bags to avoid moisture absorption and yellowing.

Special Operation Reminder

Avoid long-term exposure to air and strong light during weighing; mixing formula pH should be controlled above 6.0 to maintain product stability.

Valid Shelf Life

24 months under intact original sealed packaging; all assay, impurity and microbial indicators are fully guaranteed within expiry date.

Why SUNWAY

Sunway Core Competitive Advantages

Low-Acid Buffered VC Raw Material Supply Chain Adopt neutral salt synthesis process, effectively avoid strong acidity defects of pure L-Ascorbic Acid, stable color retention during thermal processing, suitable for protein & dairy sensitive formulas.

One-Stop Dual-Fortification Formula Technical Support Our food & nutrition R&D team provides free formula guidance for VC-calcium compound products, solve browning, precipitation and acidity irritation problems; custom vitamin-mineral premix development service available.

Complete Standardized Export Documentation System Full set of standardized export papers with complete batch test data attached to COA, fully meet customs inspection and third-party laboratory re-test demands of EU, USA, Southeast Asian markets.

Flexible Tiered Pricing & Diversified Order Matching 5kg small trial orders supported for new product R&D; favorable tiered prices for 500kg and 1MT large bulk shipments, balancing small-batch lab testing demand and mass production cost control.

Stable Long-Term Upstream Synthesis Partnership Long-term strategic cooperation with certified vitamin synthesis manufacturers, stable batch purity and low heavy metal index without periodic quality fluctuation or stock shortage risk.

Looking for a Reliable Calcium Ascorbate Supplier?

If you are seeking stable, high-purity Calcium Ascorbate with complete international compliance documents, Sunway (Hangzhou) Biotechnology Co., Ltd. is your reliable China partner.

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