Description

Ammonium Pentaborate Extra Pure is an inorganic boron compound with the chemical formula NH4B5O8·4H2O. This high-purity grade is essential for applications requiring consistent chemical composition and minimal impurity interference. It serves as a critical raw material and intermediate in advanced manufacturing and research sectors. Key industries that rely on this compound include flame retardants, specialty glass, ceramics, and electronics.

Application

• As a flame retardant synergist and char-forming agent in polymers, plastics, and textiles.
• In the formulation of specialty glasses and ceramic glazes to modify thermal and chemical resistance.
• As a boron source and corrosion inhibitor in metal treatment and cooling water systems.
• In the electronics industry for the production of semiconductors and dielectric materials.
• As a precursor in the synthesis of other high-purity boron compounds and catalysts.
• In analytical chemistry as a standard or reagent for boron determination.
• For research and development in advanced material science and nanotechnology.

Basic Information

Product Name	Ammonium Pentaborate Extra Pure
CAS No.	12229-12-8
Molecular Formula	NH4B5O8·4H2O
Molecular Weight	272.15 g/mol
Synonyms	Ammonium Pentaborate Tetrahydrate; Ammonium Borate (NH4B5O8); Pentaboric Acid Ammonium Salt; Ammonium Borate Octahydrate (common misnomer); Ammonium Pentaborate Octahydrate; ABO; APB; Boric Acid, Ammonium Salt
EINECS	235-432-0

Quality Control

Our Ammonium Pentaborate Extra Pure is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets exacting purity and compositional specifications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profiles, and physical parameters is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, store in a cool, dry place at a controlled room temperature (15-25°C). The container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can lead to caking and degradation of product quality. Store away from incompatible materials.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (NH4B5O8·4H2O)	≥ 98.0 %
Boron Content (as B)	≥ 19.8 %
Ammonium Content (as NH4)	≥ 6.6 %
Water Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %
Heavy Metals (as Pb)	≤ 0.002 %
Iron (Fe)	≤ 0.005 %
pH (5% solution)	7.5 - 9.0
Loss on Drying	≤ 1.0 %

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