China Factory Direct
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| CAS number | 9005-35-0 |
| Product name | Calcium Alginate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
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| Food Industry | Thickener, stabilizer, gelling agent | Added directly as a food additive to beverages, jams, and ice cream to improve texture; or used in gel-based fabrication of imitation foods (e.g., artificial caviar, fruit-shaped beads). |
| Pharmaceutical Industry | Hemostatic agent, wound dressing, controlled-release drug carrier | Processed into hemostatic sponges or gauzes via calcium–sodium ion exchange for topical hemorrhage control; or employed as microcapsule wall material to regulate drug release kinetics. |
| Bioengineering | Cell immobilization support, microcapsule culture matrix | Microorganisms, plant/animal cells, or enzymes are entrapped within calcium alginate gel microspheres to enable immobilized cell culture or biocatalysis. |
| Textile Printing & Dyeing Industry | Paste for reactive dye printing | Used as a printing paste, leveraging its water retention and screen penetration properties to prevent dye bleeding and enhance print definition. |
| Cosmetics Industry | Humectant, thickener, film-forming agent | Incorporated into emulsions, facial masks, toothpastes, etc., to adjust viscosity, moisturize skin, or form protective films. |
| Chemical / Environmental Engineering | Immobilized enzyme support, adsorption material | Enzymes are immobilized via entrapment for catalytic applications; or the porous structure is utilized to adsorb heavy metal ions from aqueous solutions in wastewater treatment. |
| Dental Medicine | Dental impression material | Rapidly forms a gel upon mixing with water, enabling high-precision, fast-setting impressions of teeth and oral tissues. |
| Agriculture | Seed coating agent, controlled-release fertilizer carrier | Applied as a seed coating to enhance germination rates via film formation; or used to encapsulate fertilizer granules to modulate nutrient release. |
| Detection Item | Common Analytical Method | Method Overview |
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| Calcium Content | Complexometric Titration with EDTA | Calcium ions form a stable complex with EDTA at pH 10; endpoint detected using Eriochrome Black T indicator. |
| Loss on Drying | Gravimetric Method (Oven Drying) | Sample is dried at 105 C to constant weight; moisture content calculated from weight loss. |
| pH of 1% Aqueous Dispersion | Potentiometric Measurement | Hydrogen ion activity measured using calibrated pH electrode in a standardized suspension. |
| Viscosity (1% w/v, 20 C) | Rotational Viscometry | Shear-dependent resistance to flow measured using spindle-type viscometer under controlled temperature. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of lead and other heavy metals after acid digestion and flame or graphite furnace atomization. |
| Arsenic | Hydride Generation-AAS (HG-AAS) | Arsenic is reduced to arsine gas, swept into quartz cell for atomic absorption measurement. |
| Sulfated Ash | Gravimetric Method (Muffle Furnace) | Residue weight after ignition at 500-600 C following sulfuric acid treatment. |
| Residual Solvents (e.g., Ethanol) | Gas Chromatography (GC-FID) | Separation and quantification of volatile solvents using flame ionization detection. |
| Microbial Contamination (Total Aerobic Count) | Plate Count Agar Culture | Viable aerobic microorganisms enumerated by colony formation after incubation at 30-35 C for 3-5 days. |
| Protein Impurity | Lowry Assay | Copper-protein complex formation followed by Folin-Ciocalteu reagent reaction for colorimetric quantification. |
| Particle Size Distribution | Laser Diffraction | Scattering pattern of dispersed particles analyzed to calculate size distribution based on Mie theory. |
| Identity Confirmation | Fourier Transform Infrared Spectroscopy (FTIR) | Comparison of sample IR spectrum with reference standard to verify characteristic functional group absorptions. |
| Test Item | Specification |
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| Appearance | Faint beige powder |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=1.0% |
| Heavy Metals | <=20 ppm |
| Solubility | Insoluble in water, soluble in dilute acids |
| Odor | Characteristic, faint |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.