Product Introduction
Antimony(III) Sulfide (CAS 1345-04-6), naturally occurring as the mineral stibnite, is a significant inorganic compound. It typically appears as a black or lead-grey crystalline powder or as a metallic-looking lump. Antimony(III) Sulfide (CAS 1345-04-6) is widely recognized for its semiconductor properties and its role as a high-performance additive in the friction industry. Because of its unique thermal stability and lubricating properties at high temperatures, it is an essential component in modern automotive safety systems. In addition to its industrial uses, it is a traditional ingredient in pyrotechnics, valued for its ability to produce brilliant white light and specific glitter effects.
Applications
Friction Materials and Brake Linings
This product is a critical additive in the manufacture of brake pads and friction linings. It acts as a lubricant at high temperatures and a friction stabilizer, helping to reduce noise and vibration during braking.
Pyrotechnics and Explosives
In the fireworks industry, Antimony(III) Sulfide is used as a fuel and sensitizer. It is essential for creating “glitter” effects and white fire compositions, as well as being a component in certain safety match formulations.
Glass and Pigment Industry
It is utilized as a decolorizing agent in glass manufacturing and as a raw material for producing specialized infrared-transmitting glass. It also serves as a component in certain deep-red or black pigments.
Semiconductors and Photovoltaics
As a $p$-type semiconductor with a narrow bandgap, it is researched and used in the production of photosensitive devices, infrared detectors, and specialized solar cell materials.
Packaging
Standard industrial packaging options for Antimony(III) Sulfide include:
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25kg heavy-duty woven bags with PE inner liners.
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1000kg jumbo bags (FIBC) for large-scale industrial use.
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Steel drums or fiber drums for specialized high-purity powder applications.
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Custom labeling and neutral packaging are available upon request from Chemfine.
Storage
Antimony(III) Sulfide should be stored in a cool, dry, and well-ventilated warehouse. Containers must be kept tightly sealed to prevent dust dispersion and moisture absorption. It should be kept away from strong acids, oxidizing agents, and chlorates to avoid the release of toxic hydrogen sulfide gas. Ensure the storage area is protected from direct sunlight and heat sources, as high temperatures can lead to oxidation.
Related and Similar Products
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Antimony Trioxide – CAS 1309-64-4
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Antimony Pentasulfide – CAS 1315-04-4
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Sodium Antimonate – CAS 15432-85-6
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Bismuth(III) Sulfide – CAS 1345-07-9
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Molybdenum Disulfide – CAS 1317-33-5
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Arsenic Trisulfide – CAS 1303-33-9
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Zinc Sulfide – CAS 1314-98-3
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Tin(II) Sulfide – CAS 1314-95-0
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Copper(II) Sulfide – CAS 1317-40-4
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Lead(II) Sulfide – CAS 1317-36-8
FAQ
Friction Materials and Brake Linings
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Q1: What role does the particle size play in friction applications? A1: Finer powders (like 325 mesh) provide more uniform dispersion within the friction matrix, which leads to more consistent braking performance and less “squeal” or noise.
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Q2: Does Antimony(III) Sulfide improve the lifespan of brake pads? A2: Yes, by acting as a high-temperature solid lubricant, it reduces the wear rate of the brake pad material under extreme thermal stress.
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Q3: Is it compatible with organic binders in brake pads? A3: It is highly compatible with phenolic resins and other binders commonly used in both semi-metallic and low-steel friction formulations.
Pyrotechnics and General Safety
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Q1: Why is it used in safety matches? A1: It acts as a fuel in the match head composition, providing a steady burn rate and contributing to the ease of ignition when struck against the striking surface.
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Q2: Is this material considered hazardous for transport? A2: Yes, it is typically classified under UN 1549 (Antimony compounds, inorganic, solid, n.o.s.) and requires appropriate hazardous material handling and labeling.
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Q3: Does it react with moisture? A3: It is generally stable in moist air, but in the presence of strong acids, it will react to form hydrogen sulfide gas, which is toxic and flammable.
