Description

Barium Phosphite CAS NO 26946-37-2 is an inorganic salt primarily valued for its role as a highly effective heat stabilizer and smoke suppressant in polymer formulations. This compound is crucial for manufacturers seeking to enhance the thermal processing stability and fire safety performance of various halogen-containing materials. It is an essential raw material for producers in the plastics, elastomers, and specialty chemical industries, particularly for applications requiring improved weatherability and flame retardancy.

Application

• Primary heat stabilizer for PVC and other halogenated polymers.
• Smoke suppressant in flame-retardant cable compounds and vinyl flooring.
• Synergistic component in flame retardant systems for plastics and textiles.
• Stabilizing agent for elastomers and synthetic rubbers during high-temperature processing.
• Intermediate in the synthesis of other specialty phosphorous-based chemicals.
• Additive for improving the long-term thermal aging (LTTA) performance of polymeric materials.

Basic Information

Product Name	Barium Phosphite
CAS No.	26946-37-2
Molecular Formula	BaHPO3 or Ba(H2PO3)2 (commonly represented)
Molecular Weight	Contact for details
Synonyms	Barium hydrogen phosphite; Barium phosphonate; Phosphorous acid, barium salt; Barium dihydrogen phosphite; Bis(dihydrogen phosphito)barium; Barium phosphite stabilizer; PVC heat stabilizer barium phosphite
EINECS	Contact for details

Quality Control

Our Barium Phosphite is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. The product undergoes rigorous testing for key parameters including purity, heavy metal content, and particle size distribution to meet the demanding specifications of polymer stabilization. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with agreed specifications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent caking and degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White powder
Identification (IR)	Conforms
Assay (Barium Phosphite)	≥ 98.0 %
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Particle Size (D50)	Contact for details

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