Sodium tetraborate pentahydrate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 12179-04-3 |
| Product name | Sodium tetraborate pentahydrate |
| 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) |
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Documents We Provide for Sodium tetraborate pentahydrate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Sodium tetraborate pentahydrate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Sodium tetraborate pentahydrate
| Industry | Application | Process |
|---|---|---|
| Glass & Ceramics | Additive for glass fiber insulation materials | Used as a flux and glass former in glass melting furnaces to lower the melting temperature and enhance the chemical stability and mechanical strength of glass fibers. |
| Glass & Ceramics | Additive for glazes and enamels | Incorporated into glaze formulations to control thermal expansion coefficient, improve gloss and water resistance, and prevent glaze cracking. |
| Detergents & Cleaning | Detergent builder | Used in detergent formulations as a pH buffer and enzyme stabilizer to provide an alkaline environment that enhances surfactant cleaning performance and softens hard water. |
| Personal Care & Cosmetics | Preservative in cosmetics | Leveraging its antibacterial properties, incorporated into ophthalmic solutions, skin creams, shampoos, and other products as a preservative and pH adjuster. |
| Agriculture | Micronutrient fertilizer | Applied directly or as a foliar spray to supply boron essential for crop growth and prevent boron deficiency disorders (e.g., “flowering without fruiting” in rape). |
| Agriculture | Pesticide carrier and stabilizer | Used in pesticide formulations to improve suspension stability and efficacy, or as a component in herbicides for enhanced weed control. |
| Metallurgy & Mechanical Engineering | Welding flux | Applied during copper brazing and soldering processes to protect metal surfaces from oxidation, remove surface oxides, and improve solder wettability and flow. |
| Pharmaceuticals | Disinfectant and preservative | Formulated into solutions or ointments for disinfection of skin and mucous membranes, or as a component in ocular irrigation solutions. |
| Paper Industry | Flame retardant and sizing agent | Used in the production of specialty papers (e.g., flame-retardant paper), typically in combination with boric acid to enhance flame resistance and durability. |
| Wood Preservation | Wood preservative and flame retardant treatment | Applied via pressure impregnation to protect wood against decay and insect infestation while imparting flame-retardant properties. |
| Textile Dyeing & Printing | Mordant and finishing agent | Used as a mordant in dyeing processes to strengthen dye–fiber bonding; applied in fabric finishing to improve flame resistance and wash fastness. |
| Chemical Synthesis | Chemical reagent and buffer preparation | Used in laboratory and industrial synthesis to prepare buffer solutions or as a starting material for synthesizing other boron-containing compounds. |
Manufacturing Quality Control of Sodium tetraborate pentahydrate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Na2B4O7.5H2O) | Acid-Base Titration | Direct titration with standardized HCl using methyl red-bromocresol green indicator; borate hydrolyzes to boric acid and reacts with mannitol to enhance acidity. |
| pH (1% aqueous solution) | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a 1% w/v aqueous solution at 25 C. |
| Loss on Drying (LOD) | Gravimetric Method | Weight loss after drying at 105 C for 2 hours; reflects total volatile content including water of hydration. |
| Chloride (Cl) | Potentiometric Titration | Titration with silver nitrate using silver indicator electrode; measures free chloride ions in solution. |
| Sulfate (SO4) | Gravimetric Method | Precipitation as barium sulfate followed by ignition and weighing; quantifies sulfate impurity. |
| Heavy Metals (as Pb) | Colorimetric Method (Thioacetamide) | Reaction with thioacetamide in acidic medium to form colored metal sulfide complexes, compared visually or spectrophotometrically. |
| Iron (Fe) | UV-Vis Spectrophotometry | Formation of orange-red complex with 1,10-phenanthroline; absorbance measured at ~510 nm. |
| Calcium (Ca) | EDTA Complexometric Titration | Selective titration with EDTA at pH 10 using murexide indicator; calcium forms stable 1:1 complex. |
| Magnesium (Mg) | EDTA Complexometric Titration | Titration with EDTA at pH 10 using Eriochrome Black T indicator; magnesium forms stable 1:1 complex. |
| Arsenic (As) | Gutzeit Limit Test | Generation of arsine gas from sample under acidic conditions, reacted with mercuric bromide paper to yield yellow stain. |
| Insoluble Matter | Gravimetric Filtration | Filtration through ashless filter paper, drying, and weighing of residue after washing with hot water. |
| Residue on Ignition | Gravimetric Method | Weight of non-volatile residue remaining after ignition at 800 C; indicates inorganic impurities. |
Technical Specifications of Sodium tetraborate pentahydrate
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline solid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 ppm |
| Total Impurities | <=1.5% |
| Solubility | Freely soluble in water; practically insoluble in ethanol |
| Odor | Odorless |
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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Packaging of Sodium tetraborate pentahydrate
Industrial Sodium tetraborate pentahydrate 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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