Description

Sodium Tetraborate Decahydrate is a versatile inorganic salt widely recognized for its role as a source of boric oxide. This compound is essential in numerous industrial processes due to its fluxing, buffering, and fire-retardant properties. Key industries that rely on this material include glass and ceramics manufacturing, metallurgy, agriculture, and detergents. Its consistent quality and reliable performance make it a critical raw material for global supply chains.

Application

• Glass & Ceramics Manufacturing: Acts as a primary flux to lower melting temperatures and improve the thermal and chemical durability of borosilicate glass, fiberglass, and ceramic glazes.
• Metallurgy & Metalworking: Used as a flux in welding and soldering, and as a component in metal refining and surface treatment solutions.
• Agriculture: Serves as a micronutrient fertilizer to correct boron deficiencies in soil, promoting healthy plant growth and crop yield.
• Detergents & Cleaning Agents: Functions as a water softener, pH buffer, and bleaching agent booster in laundry and industrial cleaning formulations.
• Wood Preservation & Flame Retardants: Imparts fire-retardant properties to wood products, textiles, and cellulose insulation.
• Adhesives & Industrial Fluids: Utilized as a cross-linking agent, viscosity modifier, or corrosion inhibitor in various specialty chemical formulations.
• Laboratory & Analytical Chemistry: Employed in the preparation of buffers and as a reagent in analytical procedures.

Basic Information

Product Name	Sodium Tetraborate Decahydrate
CAS No.	1303-96-4
Molecular Formula	Na2B4O7·10H2O
Molecular Weight	381.37 g/mol
Synonyms	Borax Decahydrate; Sodium Borate Decahydrate; Disodium Tetraborate Decahydrate; Borax 10-Hydrate; Sodium Tetraborate-10-Hydrate; Tincal; Boric Acid, Disodium Salt, Decahydrate
EINECS	215-540-4

Quality Control

Our Sodium Tetraborate Decahydrate is produced under a stringent quality management system to ensure batch-to-batch consistency and compliance with relevant industrial and agricultural standards. Each lot is tested against comprehensive specifications, including assay, heavy metal limits, and clarity of solution. A Certificate of Analysis (COA) documenting all test results is provided with every shipment to guarantee product integrity and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent caking or degradation due to atmospheric moisture. Keep away from incompatible materials such as strong acids.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (Na2B4O7·10H2O)	≥ 99.5%
pH (1% Solution)	9.1 - 9.3
Loss on Drying	47.0 - 50.5%
Water Insoluble Matter	≤ 0.04%
Sulfate (SO4)	≤ 0.02%
Chloride (Cl)	≤ 0.01%
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.