Description

Lead Phosphite, Dibasic is an inorganic compound primarily valued for its role as a heat and light stabilizer in polymer systems. This compound is essential for manufacturers seeking to enhance the durability and longevity of materials exposed to harsh environmental conditions. It is a critical raw material for industries including plastics, paints and coatings, and specialty chemical synthesis, where it effectively prevents degradation and maintains product integrity.

Application

• PVC Stabilizer: Acts as a highly effective heat and light stabilizer in polyvinyl chloride (PVC) formulations for pipes, cables, and profiles.
• Polymer Additive: Used to prevent thermal degradation and discoloration in various other polymer systems during processing.
• Corrosion Inhibitor: Functions in protective primer and coating formulations for metals, particularly in industrial and marine environments.
• Lubricant Additive: Employed as an anti-wear and extreme pressure additive in certain specialty greases and lubricants.
• Ceramic and Glass Production: Serves as a component in the manufacture of specialty glasses and ceramic glazes.
• Chemical Synthesis: Used as a precursor or intermediate in the synthesis of other lead-based compounds and specialty chemicals.

Basic Information

Product Name	Lead Phosphite, Dibasic
CAS No.	1344-40-7
Molecular Formula	2PbO·PbHPO3·1/2H2O (Common representation) / Pb3O2(HPO3)·H2O
Molecular Weight	742.57 g/mol (Approx., for common hydrate form)
Synonyms	Dibasic Lead Phosphite; Lead Hydrogen Phosphite; Tribasic Lead Phosphite (common industry name); Dibasic Lead Phosphite Hydrate; Plumbous Phosphite; 2PbO·PbHPO3·1/2H2O; Stabilizer T; PVC Heat Stabilizer
EINECS	215-690-0

Quality Control

Our Lead Phosphite, Dibasic is manufactured under strict process controls to ensure batch-to-batch consistency and high performance. Quality is verified through a series of analytical tests including assay, moisture content, and particle size distribution. A Certificate of Analysis (COA) detailing purity and key specifications is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Due to its light-sensitive and easily oxidized nature, it is recommended to store the product under an inert atmosphere or in sealed, light-resistant containers to maintain stability. Keep the storage temperature between 15°C and 25°C (59°F and 77°F).

Specification

Item	Specification
Appearance	White to yellowish powder
Identification (IR)	Conforms
Assay (as PbO)	Min. 90.0%
Moisture Content	Max. 0.5%
Water Soluble Matter	Max. 0.3%
Particle Size (325 mesh residue)	Max. 0.5%
Bulk Density	Contact for details

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