Description

Lithopone is a high-performance, white inorganic pigment composed of a co-precipitated mixture of zinc sulfide and barium sulfate. This compound is valued for its excellent opacity, whiteness, and chemical inertness, making it a cost-effective alternative to pure titanium dioxide in many applications. It is a critical material for manufacturers in the coatings, plastics, and rubber industries seeking to enhance product performance while managing raw material costs.

Application

• Paints and Coatings: Widely used as a white pigment and extender in interior and exterior paints, primers, and industrial coatings for its excellent hiding power and durability.
• Plastics and Masterbatches: Imparts whiteness and opacity to PVC, polyolefins, and engineering plastics, improving UV stability and reducing formulation costs.
• Rubber Goods: Serves as a reinforcing filler and whitening agent in the production of footwear, hoses, belts, and other molded rubber products.
• Paper and Printing Inks: Used as a coating pigment and filler to improve brightness, opacity, and printability of high-quality papers and inks.
• Linoleum and Flooring: A key component in the manufacture of linoleum, vinyl flooring, and other resilient floor coverings for its color and wear resistance.
• Ceramics and Glass: Acts as an opacifier and glaze component in ceramic tiles, sanitaryware, and specialty glass products.

Basic Information

Product Name	Lithopone
CAS No.	1345-05-7
Molecular Formula	BaSO4·ZnS (mixture)
Molecular Weight	Contact for details
Synonyms	Lithopone White; Zinc Sulfide Barium Sulfate; Pigment White 5; CI 77115; Orr's White; Charlton White; Griffith's White; Zinc Barium White
EINECS	215-715-5

Quality Control

Our Lithopone is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Quality parameters such as zinc sulfide content, brightness, particle size distribution, and oil absorption are rigorously tested. A Certificate of Analysis (COA) detailing all 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 at room temperature (15-25°C). Keep away from incompatible materials such as strong acids. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	White powder
Zinc Sulfide (ZnS) Content	28% - 30% (Typical)
Barium Sulfate (BaSO4) Content	70% - 72% (Typical)
Brightness (Hunter)	≥ 96%
Oil Absorption (g/100g)	10 - 18
Particle Size (325 Mesh Residue)	≤ 0.5%
Moisture Content	≤ 0.5%
pH Value (10% Slurry)	7.0 - 9.0

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