Description

Bis[Bis[(2-Ethylhexyl)Oxy]Phosphinooxy]Barium is a specialized organobarium compound primarily utilized as a high-performance heat stabilizer and co-stabilizer in polymer formulations. This chemical matters for its critical role in enhancing the thermal processing stability and long-term durability of polyvinyl chloride (PVC) and other halogenated polymers. Manufacturers in the plastics, wire and cable, and construction materials industries need it to produce products with superior resistance to heat degradation and discoloration.

Application

• Primary Heat Stabilizer for PVC: Used in rigid and flexible PVC formulations to prevent decomposition during high-temperature processing (e.g., extrusion, calendering).
• Wire and Cable Insulation: Imparts excellent long-term thermal stability to PVC insulation and jacketing for electrical cables.
• Co-stabilizer in Stabilizer Systems: Often used in combination with zinc, calcium, or organic-based stabilizers to enhance synergistic effects and performance.
• Construction Profiles and Pipes: Stabilizes PVC used in window profiles, siding, pipes, and fittings, ensuring color retention and mechanical integrity.
• Plasticized PVC Applications: Effective in flexible PVC products such as films, sheets, hoses, and synthetic leather.
• Lubricant and Processing Aid: Can contribute to improved flow properties and mold release during polymer processing.

Basic Information

Product Name	Bis[Bis[(2-Ethylhexyl)Oxy]Phosphinooxy]Barium
CAS No.	63981-01-1
Molecular Formula	C₃₂H₆₈BaO₈P₂
Molecular Weight	778.18 g/mol
Synonyms	Barium bis[bis(2-ethylhexyl) phosphite]; Barium bis(di-2-ethylhexyl phosphite); Di-2-ethylhexyl phosphite barium salt; Barium di(2-ethylhexyl) phosphite; Barium phosphite, bis(2-ethylhexyl) ester; Barium bis(O,O-di-2-ethylhexyl phosphite); PVC heat stabilizer barium phosphite; Stabilizer BZ-491 (Trade name example)
EINECS	Contact for details

Quality Control

Our Bis[Bis[(2-Ethylhexyl)Oxy]Phosphinooxy]Barium is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with industry specifications for polymer additives. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with every shipment.

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 opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (Barium Content)	≥ 17.5 %
Phosphorus Content	≥ 7.8 %
Acid Value	≤ 1.0 mg KOH/g
Moisture (Karl Fischer)	≤ 0.2 %
Density (20°C)	~1.05 g/cm³
Refractive Index (20°C)	~1.46

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