Description

Sodium Pentaborate is an inorganic boron compound with the chemical formula NaB5O8. This versatile borate is valued for its role as a controlled-release source of boron, a critical micronutrient and flame-retardant component. It serves as an essential raw material and additive in industries ranging from agriculture and ceramics to specialty glass and flame retardancy. Sodium Pentaborate CAS NO 12007-92-0 is engineered to meet the stringent quality and consistency demands of industrial-scale manufacturing.

Application

• Agriculture: Used as a slow-release boron fertilizer in micronutrient blends and foliar sprays to correct boron deficiency in crops.
• Glass & Ceramics: Acts as a fluxing agent and network former in the production of borosilicate glass, fiberglass, and ceramic glazes, improving thermal and chemical resistance.
• Flame Retardants: Incorporated into polymers, textiles, and wood treatments as a component of intumescent and char-forming flame-retardant systems.
• Metalworking & Metallurgy: Serves as a flux in welding and brazing applications and as an additive in metal refining processes.
• Detergents & Cleaners: Functions as a bleaching aid and stabilizer in powdered laundry and cleaning formulations.
• Wood Preservation: Used in formulations to protect timber from fungal decay and insect damage.
• Laboratory & Research: Employed as a reagent and standard in analytical chemistry and materials science research.
• Adhesives & Sealants: Acts as a cross-linking agent and modifier to enhance the performance of certain adhesive systems.

Basic Information

Product Name	Sodium Pentaborate
CAS No.	12007-92-0
Molecular Formula	NaB5O8
Molecular Weight	219.01 g/mol
Synonyms	Sodium Pentaborate Octahydrate; Disodium Pentaborate; Boron Sodium Oxide (NaB5O8); Sodium Borate (B5O8Na); Pentaboric Acid, Sodium Salt; Sodium Pentaborate Octahydrate (common hydrated form); UNII-8R34QN86Q6
EINECS	234-541-0

Quality Control

Our Sodium Pentaborate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. We provide a Certificate of Analysis (COA) with every shipment, detailing key parameters such as assay (B2O3 and Na2O content), impurity levels, and loss on drying. Our quality commitment supports compliance with relevant industrial and agricultural 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 product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can lead to caking and reduced flowability.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (as NaB5O8)	≥ 98.0 %
Boron Trioxide (B2O3) Content	≥ 70.0 %
Sodium Oxide (Na2O) Content	Contact for details
Loss on Drying (105°C)	≤ 2.0 %
Water Insoluble Matter	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm
pH (5% solution)	8.0 - 9.5

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