Description

Disodiumtetraboratetrihydrate CAS NO 12447-40-4 is a hydrated inorganic borate salt, also known as sodium tetraborate trihydrate. This compound is valued for its role as a controlled-release source of borate ions, which are essential in numerous industrial and agricultural processes. It is a critical raw material for manufacturers in the glass, ceramic, agriculture, and detergent industries seeking a stable, water-soluble borate.

Application

• Glass & Ceramics Manufacturing: Acts as a flux to lower melting temperatures and improve the durability and thermal shock resistance of glass fibers, borosilicate glass, and ceramic glazes.
• Agricultural Micronutrient: Used in fertilizers and foliar sprays as a source of boron, an essential nutrient for plant cell wall formation and development.
• Detergents & Cleaning Agents: Functions as a water softener, buffer, and mild alkali builder in laundry and cleaning formulations.
• Flame Retardants: Incorporated into cellulose insulation, plastics, and textiles to impart fire-resistant properties.
• Metallurgy: Serves as a flux in welding and soldering applications and in metal refining processes.
• Wood Preservation: Used in treatments to protect against fungal decay and insect damage.
• Adhesives & Binders: Employed in starch-based adhesives and as a cross-linking agent.

Basic Information

Product Name	Disodiumtetraboratetrihydrate
CAS No.	12447-40-4
Molecular Formula	Na2B4O7·3H2O
Molecular Weight	273.37 g/mol
Synonyms	Sodium Tetraborate Trihydrate; Borax Decahydrate (incorrect but common); Sodium Borate Trihydrate; Disodium Tetraborate Trihydrate; Boric Acid, Disodium Salt, Trihydrate; Tincal; 12447-40-4; E285 (food additive code).
EINECS	Contact for details

Quality Control

Our Disodiumtetraboratetrihydrate is produced under strict quality management systems to ensure batch-to-batch consistency and reliability. We offer various grades, including Technical and Refined, tailored to specific industry requirements. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with every shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 and degradation due to atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (Na2B4O7·3H2O)	≥ 99.0%
Boric Oxide (B2O3) Content	≥ 65.0%
Loss on Drying	≤ 20.0%
Water Insoluble Matter	≤ 0.1%
pH (1% Solution)	9.0 - 9.5
Sulfate (SO4)	≤ 0.1%
Chloride (Cl)	≤ 0.05%
Heavy Metals (as Pb)	≤ 10 ppm

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