Description

Calcium Plumbate is an inorganic compound primarily recognized for its role as a corrosion-inhibiting pigment in protective coatings. This material is valued for its ability to provide long-term substrate protection, particularly on ferrous metals, by forming a passive, insoluble layer. It is a critical raw material for formulators in the paints, primers, and anti-corrosion coatings industries, where durability and performance in harsh environments are paramount.

Application

• Anti-Corrosive Primers: A key active pigment in primers for steel structures, ship hulls, bridges, and industrial equipment.
• Marine Coatings: Used in coatings designed to withstand saltwater immersion and high-humidity marine atmospheres.
• Heavy-Duty Industrial Paints: Formulated into paints for chemical plants, pipelines, and storage tanks exposed to corrosive elements.
• Zinc-Rich Primers: Often combined with zinc dust to enhance the galvanic and barrier protection properties of the coating system.
• Rust-Inhibitive Paints: Provides effective rust conversion and inhibition on marginally prepared steel surfaces.

Basic Information

Product Name	Calcium Plumbate
CAS No.	12774-29-7
Molecular Formula	Ca2PbO4
Molecular Weight	351.36 g/mol
Synonyms	Calcium Orthoplumbate; Dicalcium Plumbate; Lead Calcium Oxide (PbCa2O4); Calcium Plumbate Pigment; CI 77622; Plumbate (PbO44-), calcium (1:2); Anti-corrosion pigment calcium plumbate
EINECS	235-845-5

Quality Control

Our Calcium Plumbate is manufactured under strict process controls to ensure batch-to-batch consistency and performance reliability in final formulations. Quality is verified against key parameters including lead oxide content, basicity, and particle size distribution. A Certificate of Analysis (COA) detailing purity and physical specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Keep container tightly sealed when not in use to minimize exposure to atmospheric moisture and carbon dioxide.

Specification

Item	Specification
Appearance	Yellowish-brown powder
Assay (as PbO)	Min. 85%
Calcium Oxide (CaO) Content	10 - 15%
Moisture Content	Max. 1.0%
Particle Size (325 mesh residue)	Max. 1.0%
Oil Absorption	10 - 20 g/100g
Specific Gravity	5.5 - 6.0

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