Description

Potassium Tetraborate is an inorganic salt of boron and potassium, recognized by the CAS registry number 12228-88-5. This compound serves as a versatile source of both potassium and borate ions, making it valuable in applications requiring controlled release or specific ionic properties. It is essential for manufacturers and R&D facilities in sectors such as glass and ceramics, metallurgy, and specialty chemical synthesis.

Application

• As a specialized fluxing agent in the production of high-quality glass, enamels, and ceramic glazes.
• In metallurgical processes as a slag modifier and for metal surface treatment.
• As a raw material or intermediate in the synthesis of other boron-containing compounds and complex chemicals.
• In the formulation of specialty detergents and cleaning agents where borates are functional.
• For use in laboratory and analytical chemistry as a reagent or buffer component.
• Potential application in flame retardant formulations for specific polymeric materials.
• In agricultural or horticultural contexts as a source of micronutrients (boron and potassium), subject to regulatory approval.
• As an additive in adhesives and sealants to modify curing properties or stability.

Basic Information

Product Name	Potassium Tetraborate
CAS No.	12228-88-5
Molecular Formula	B4K2O7 • nH2O (commonly tetrahydrate)
Molecular Weight	Anhydrous: 233.81 g/mol; Tetrahydrate: 305.88 g/mol
Synonyms	Dipotassium Tetraborate; Potassium Borate; Boron Potassium Oxide; Tetraboric Acid, Dipotassium Salt; Dipotassium Tetraborate Tetrahydrate; Potassium Pyroborate; Fused Potassium Borate; K2B4O7
EINECS	Contact for details

Quality Control

Our Potassium Tetraborate is produced and handled under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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 material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as K2B4O7•4H2O)	≥ 98.0 %
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 0.5 %
pH (5% solution)	8.5 - 9.5
Heavy Metals (as Pb)	≤ 20 ppm

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