Description

Disodium Tetraborate CAS NO 1330-43-4 is an inorganic boron compound, commonly known as borax decahydrate. This versatile chemical is valued for its role as a source of boric oxide and its multifunctional properties as a flux, buffer, and mild alkali. It is essential for manufacturers in industries such as glass and ceramics, detergents and cleaners, agriculture, and metallurgy, where consistent quality and reliable supply are critical for production processes.

Application

• Glass & Ceramics Manufacturing: Acts as a primary flux to lower melting temperatures and improve the durability and thermal shock resistance of glass, fiberglass, and ceramic glazes.
• Detergents & Cleaning Formulations: Serves as a water softener, pH buffer, and bleaching agent booster in laundry detergents, household cleaners, and industrial cleaning products.
• Agricultural Micronutrient: Used as a source of the essential micronutrient boron in fertilizers and soil amendments to correct boron deficiencies in crops.
• Metallurgy & Metalworking: Employed as a flux in welding and soldering to remove metal oxides, and as a component in metal finishing and corrosion inhibitors.
• Wood Preservation & Pest Control: Functions as an effective fungicide and insecticide for timber treatment and in formulations for pest control.
• Adhesives & Specialty Chemicals: Utilized as a cross-linking agent, fire retardant, and buffer in the production of adhesives, polymers, and other specialty chemical products.

Basic Information

Product Name	Disodium Tetraborate
CAS No.	1330-43-4
Molecular Formula	Na2B4O7·10H2O
Molecular Weight	381.37 g/mol
Synonyms	Borax Decahydrate; Sodium Borate Decahydrate; Sodium Tetraborate Decahydrate; Boric Acid, Disodium Salt; Tincal; Borax 10-Hydrate; Sodium Biborate; Disodium Tetraborate Decahydrate
EINECS	215-540-4

Quality Control

Our Disodium Tetraborate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, assay, and impurity profiles. Certificates of Analysis (COA) are provided with every shipment, documenting compliance with relevant industrial and technical standards. We support customer-specific quality requirements and audits.

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) and must be kept in original packaging or a moisture-proof container to prevent caking and degradation. Keep away from incompatible materials such as strong acids.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (Na2B4O7·10H2O)	≥ 99.0 %
pH (1% Solution)	9.1 - 9.3
Loss on Drying	≤ 1.0 %
Water Insoluble Matter	≤ 0.04 %
Sulfate (SO4)	≤ 0.1 %
Chloride (Cl)	≤ 0.05 %
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.