Description

Ammonium Pentaborate Octahydrate is an inorganic boron compound with the formula NH4B5O8·8H2O. This material serves as a versatile source of both boron and ammonium ions, making it valuable for applications requiring controlled release or specific chemical reactivity. It is primarily utilized in industries such as flame retardancy, specialty glass and ceramics manufacturing, and as a chemical intermediate. The compound is commercially available under the CAS registry number 12046-03-6.

Application

• Flame Retardant Additive: Incorporated into polymers, textiles, and wood treatments to impart fire resistance.
• Glass & Ceramics Production: Acts as a flux and source of boron oxide (B2O3) to modify thermal and chemical properties in specialty glasses, enamels, and glazes.
• Chemical Synthesis: Used as a precursor or intermediate in the production of other boron-containing compounds and catalysts.
• Wood Preservation: Employed in formulations to protect lumber from fungal decay and insect damage.
• Adhesives & Sealants: Functions as a cross-linking agent or modifier to enhance performance characteristics.
• Agriculture (Limited Use): Can serve as a source of micronutrient boron in specific fertilizer formulations.
• Laboratory Reagent: Used in analytical chemistry and research settings.

Basic Information

Product Name	Ammonium Pentaborate Octahydrate
CAS No.	12046-03-6
Molecular Formula	NH4B5O8·8H2O or H4BNO8·8H2O
Molecular Weight	272.15 g/mol (Octahydrate)
Synonyms	Ammonium Pentaborate; Ammonium Pentaborate Octahydrate; Ammonium Borate; Pentaboric Acid Ammonium Salt; Ammonium Borate Octahydrate; Ammonium Biborate; Boron Ammonium Oxide Hydrate; ABO
EINECS	234-965-3

Quality Control

Our Ammonium Pentaborate Octahydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets defined specifications for purity, composition, and physical properties. A Certificate of Analysis (COA) detailing the results for key parameters such as assay, moisture content, and impurity levels is provided with every shipment to guarantee consistent quality and traceability.

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) and must be kept in a dry environment to prevent caking or degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (NH4B5O8·8H2O)	≥ 98.0 %
Boron Content (as B)	≥ 19.8 %
Ammonium Content (as NH4+)	≥ 6.6 %
Water Content (Loss on Drying)	52.0 - 54.0 %
Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm

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