Description

Boric Acid Disodium Salt, Tetrahydrate is a specialized inorganic salt of boric acid, widely recognized for its utility as a buffering agent and a source of borate ions. This compound is valued for its consistent performance in applications requiring precise pH control and chemical stability. It serves as a critical raw material for manufacturers in the pharmaceutical, agrochemical, and specialty glass industries, where high-purity inorganic reagents are essential.

Application

• Pharmaceutical Buffer & Reagent: Used in the formulation of ophthalmic solutions, antiseptics, and as a reagent in various synthesis processes.
• Agricultural Chemicals: Acts as a micronutrient source and a component in fertilizers and wood preservatives.
• Glass & Ceramics Manufacturing: Employed in the production of heat-resistant glass, fiberglass, and enamel glazes.
• Metal Treatment & Flux: Used in metalworking as a flux for welding and brazing, and in surface treatment processes.
• Laboratory & Analytical Chemistry: Serves as a standard or buffer solution component in analytical procedures.
• Flame Retardants: A component in formulations for textiles, plastics, and wood to impart flame-retardant properties.

Basic Information

Product Name	Boric Acid Disodium Salt, Tetrahydrate
CAS No.	12045-87-3
Molecular Formula	Na2B4O7 · 4H2O
Molecular Weight	273.37 g/mol
Synonyms	Disodium Tetraborate Tetrahydrate; Sodium Tetraborate Tetrahydrate; Borax Decahydrate (common name); Sodium Borate Tetrahydrate; Tincal; Boric Acid (Disodium Salt), Tetrahydrate; Na2B4O7·4H2O
EINECS	234-541-0

Quality Control

Our Boric Acid Disodium Salt, Tetrahydrate is manufactured under a strict quality management system. Each batch undergoes comprehensive 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, ensuring full traceability and compliance with your procurement standards.

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 material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can lead to caking or changes in assay.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (Na2B4O7·4H2O)	≥ 99.0%
pH (5% solution)	9.0 - 9.5
Loss on Drying	≤ 1.0%
Water Insoluble Matter	≤ 0.05%
Chloride (Cl)	≤ 0.01%
Sulfate (SO4)	≤ 0.02%
Heavy Metals (as Pb)	≤ 10 ppm

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