Description

Lead Phosphite CAS NO 16038-76-9 is an inorganic compound primarily utilized as a high-performance stabilizer and antioxidant in polymer systems. Its core value lies in its ability to effectively inhibit thermal degradation and oxidative breakdown, thereby extending the service life of sensitive materials. This product is essential for manufacturers in the plastics, coatings, and specialty chemical industries seeking to enhance the durability and stability of their formulations under demanding conditions.

Application

• Polymer Stabilizer: Primary application as a heat stabilizer and antioxidant for PVC (polyvinyl chloride) and other halogenated polymers to prevent dehydrochlorination and discoloration.
• Lubricant Additive: Used as an anti-wear and extreme pressure (EP) additive in advanced grease and lubricant formulations.
• Corrosion Inhibitor: Functions as a protective pigment or additive in anti-corrosive primer coatings for metals.
• Flame Retardant Synergist: Acts in combination with other flame retardants to improve fire resistance in plastics and textiles.
• Ceramic and Glass Production: Employed as a precursor or additive in the manufacture of specialty glasses and electronic ceramics.
• Research & Development: Serves as a reagent or catalyst precursor in chemical synthesis and materials science research.

Basic Information

Product Name	Lead Phosphite
CAS No.	16038-76-9
Molecular Formula	PbHPO3 or Pb3(PO3)2 (commonly represented)
Molecular Weight	Contact for details
Synonyms	Lead hydrogen phosphite; Lead(II) hydrogen phosphite; Dibasic lead phosphite; Lead phosphonate; Plumbous phosphite; Stabilizer TPP; PVC heat stabilizer; NSC 84225; Phosphorous acid, lead(2+) salt (1:1)
EINECS	240-191-4

Quality Control

Our Lead Phosphite is manufactured under strict quality control protocols to ensure batch-to-batch consistency and performance reliability. The product is tested against stringent in-house specifications that typically assess parameters such as lead content, phosphite content, moisture, and particle size distribution. A Certificate of Analysis (COA) detailing the results for each specific lot is provided 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 under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep the container sealed when not in use to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (as PbHPO3)	≥ 98.0 %
Lead (Pb) Content	Contact for details
Moisture (Loss on Drying)	≤ 1.0 %
Residue on Sieve (325 mesh)	≤ 0.5 %
Water Soluble Matter	≤ 0.3 %

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