Description

Antimony Oxide Sulfide is an inorganic compound with the chemical formula Sb2O3·Sb2S3, functioning as a critical intermediate and functional additive in several high-value industrial processes. Its unique chemical properties make it valuable for applications requiring flame retardancy, pigment production, and catalytic activity. This product is essential for manufacturers in the plastics, ceramics, glass, and specialty chemical industries seeking to enhance material performance and safety.

Application

• As a synergistic flame retardant in plastics, rubber, and textiles, often combined with halogenated compounds.
• As a key raw material in the production of antimony-based pigments, such as Naples Yellow, for ceramics, glass, and paints.
• As a catalyst or catalyst precursor in specific organic synthesis and polymerization reactions.
• In the manufacturing of infrared-transmitting glasses and specialty optical glasses.
• As a component in friction materials, such as brake pads and clutch facings.
• In pyrotechnic compositions for specific color effects.
• For the production of other antimony chemicals through controlled chemical reactions.

Basic Information

Product Name	Antimony Oxide Sulfide
CAS No.	1333-30-8
Molecular Formula	Sb2O3·Sb2S3
Molecular Weight	685.60 g/mol (for the combined oxide-sulfide complex)
Synonyms	Antimony(III) Oxide Sulfide; Antimony Oxysulfide; Antimony Sulfide Oxide; Diantimony Trioxide Sulfide; Antimony Red (historical pigment name); Antimony Vermilion; Kermes Mineral (historical); Needle Antimony; Sb2O3·Sb2S3
EINECS	215-607-8

Quality Control

Our Antimony Oxide Sulfide is manufactured under strict quality management protocols to ensure batch-to-batch consistency and reliability. We adhere to relevant industrial standards and can provide material tailored to specific technical requirements. A comprehensive Certificate of Analysis (COA) detailing purity, physical characteristics, and impurity levels is supplied with every shipment to guarantee product integrity for your process.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and strong oxidizing agents. Keep container tightly sealed when not in use to minimize exposure to moisture and air.

Specification

Item	Specification
Appearance	Orange-red to reddish-brown powder
Assay (as Sb2O3·Sb2S3)	≥ 98.0 %
Antimony (Sb) Content	Contact for details
Lead (Pb)	≤ 0.05 %
Arsenic (As)	≤ 0.01 %
Iron (Fe)	≤ 0.02 %
Particle Size (Typical)	Contact for details
Loss on Drying	≤ 0.5 %

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