Sodium alginate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 9005-38-3 |
| Product name | Sodium alginate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeCosmetic GradeFood 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) |
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Documents We Provide for Sodium alginate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Sodium alginate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Sodium alginate
| Industry | Application | Process |
|---|---|---|
| Food | Thickener, stabilizer | Applied in the processing of dairy products, beverages, jellies, and similar products |
| Pharmaceuticals | Sustained-release excipient | Applied in the preparation of sustained-release capsules or tablets |
| Medical Devices | Hemostatic material | Applied in surgical hemostatic sponges |
| Textiles | Sizing agent | Applied in textile sizing treatments |
| Paper | Strength enhancer | Applied as a paper strength additive |
| Water Treatment | Suspended solids flocculant | Applied to remove suspended particles in water treatment |
| Agriculture | Seed coating agent | Applied in seed coating to improve germination rate and disease resistance |
| Personal Care | Humectant, thickener | Applied as a stabilizer and thickener in skincare and cosmetic formulations |
| Construction | Concrete admixture | Applied to improve concrete workability and water retention |
| Printing | Ink thickener | Applied to adjust viscosity in ink formulations |
Manufacturing Quality Control of Sodium alginate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Na-Alginate Content) | Acid-Base Titration | Neutralization of carboxyl groups with standardized NaOH after acid hydrolysis and back-titration. |
| Viscosity | Capillary Viscometry | Measurement of flow time of a defined alginate solution through a calibrated capillary tube under gravity. |
| Moisture Content | Karl Fischer Titration | Quantitative reaction of water with iodine and sulfur dioxide in a methanol-based reagent, monitored potentiometrically. |
| Ash Content | Gravimetric Analysis | Incineration at 500-600 C to oxidize organic matter, followed by weighing of residual inorganic ash. |
| pH (1% aqueous solution) | Potentiometric pH Measurement | Determination using calibrated glass electrode in a 1% w/v aqueous alginate solution at 25 C. |
| Heavy Metals (Pb, Cd, As, Hg) | ICP-MS | Multi-element quantification via ionization in plasma and mass-selective detection at trace levels. |
| Sodium Content | Flame Photometry | Measurement of characteristic yellow emission intensity of sodium atoms in an air-propane flame. |
| Loss on Drying | Thermogravimetric Analysis | Weight loss measured after drying at 105 C for 2 hours under controlled atmospheric conditions. |
| Microbial Limits | Membrane Filtration | Filtration of sample solution followed by incubation on selective agar media for total aerobic count and absence of specified pathogens. |
| Residual Solvents (e.g., Ethanol, Isopropanol) | Gas Chromatography (GC-FID) | Separation and quantification based on retention time and flame ionization response relative to standards. |
| Particle Size Distribution | Laser Diffraction | Analysis of angular scattering pattern of laser light passed through a dispersed sample to calculate size distribution. |
| Clarity and Color | Visual Comparison / Spectrophotometry | Assessment of solution clarity against standard opalescent liquids; color measured as APHA/Pt-Co units at 430 nm. |
Technical Specifications of Sodium alginate
| Test Item | Specification |
|---|---|
| Appearance | White to off-white powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=1.5% |
| Heavy Metals | <=20 ppm |
| Solubility | Freely soluble in water; insoluble in ethanol and chloroform |
| Odor | Characteristic, faintly characteristic |
| Color (APHA/Pt-Co) | <=100 |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Sodium alginate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Sodium alginate
Industrial Sodium alginate Procurement FAQ
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.
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