Description

Boric Acid Sodium Salt Pentahydrate CAS NO 12046-75-2 is a hydrated inorganic salt derived from boric acid and sodium, valued for its controlled release of borate ions. This compound is essential for applications requiring a stable, water-soluble source of boron in a solid form. It is a critical raw material for manufacturers in the glass, ceramics, flame retardant, and agricultural micronutrient industries.

Application

• Glass & Ceramics Manufacturing: Acts as a fluxing agent to lower melting temperatures and improve the thermal and chemical durability of borosilicate glass, fiberglass, and ceramic glazes.
• Flame Retardants & Wood Preservation: Serves as an effective component in fire-retardant treatments for textiles, wood, and cellulose-based materials due to its ability to promote char formation and suppress flames.
• Agricultural Micronutrients: Used in fertilizer formulations and foliar sprays to correct boron deficiencies in crops, which is vital for cell wall formation and reproductive development.
• Metallurgy & Metalworking: Employed as a flux in welding and soldering processes to remove oxides and prevent re-oxidation of metal surfaces.
• Industrial Fluids & Lubricants: Functions as a corrosion inhibitor and buffering agent in aqueous metalworking fluids and antifreeze formulations.
• Detergents & Cleaning Agents: Utilized as a pH buffer, water softener, and mild bleaching agent in specialty cleaning and laundry products.
• Chemical Synthesis: Serves as a precursor or buffering agent in the production of other boron-containing chemicals and specialty materials.

Basic Information

Item	Detail
Product Name	Boric Acid Sodium Salt Pentahydrate
CAS No.	12046-75-2
Molecular Formula	NaBO3·5H2O or NaB(OH)4·2H2O
Molecular Weight	Contact for details
Synonyms	Sodium Metaborate Pentahydrate; Sodium Tetrahydroxyborate Pentahydrate; Borax Derivative; Sodium Borate Pentahydrate; Perborax precursor; Boric Acid (H3BO3) Sodium Salt Pentahydrate; NaBO3·5H2O
EINECS	Contact for details

Quality Control

Our Boric Acid Sodium Salt Pentahydrate 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) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

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 original container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can lead to caking or degradation.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as NaBO3·5H2O)	≥ 98.0 %
pH (1% Solution)	10.0 - 11.5
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 0.1 %
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.