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What is silicon sulfide?

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Overview of silicon sulfide SiS2 powder

Silicon sulfide is an inorganic compound with the formula SiS2. White fibrous orthorhombic or tetragonal crystals. The relative density is 2.02, the melting point is 1090℃, and it sublimates at 1250℃ in nitrogen. Insoluble in benzene; soluble in dilute alkali. It is stable under normal temperature and pressure, and decomposes into SiO2 and H2S in case of moisture. Burns when heated in air.

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How is silicon sulfide SiS2 powder produced?

1. Put aluminum powder and excess sulfur into a crucible and burn to obtain aluminum sulfide. The aluminum sulfide was pulverized and mixed with a slight excess of silica sand. Put the mixture in shingles, then put the shingles in a quartz tube, heat the quartz tube while injecting a small amount of dry nitrogen. The reaction starts at 1100°C, and the sublimated Sis2 adheres to the low temperature zone of the 1200-1300°C tube. After purification, it is sublimed again under nitrogen or vacuum. Tetragonal Sis2 can be prepared by heating a mixture of silicon and sulfur at 5 × 103 MPa and 700 °C.

 2. Heating and decomposing hydrocarbon free-radical silicon at 250~300℃ to generate silicon disulfide and sulfide. If sulfur is added, it decomposes at lower temperatures. 96g of sulfur was mixed with 39g of Si(SC2H5)4 and heated at 200°C for 10min to obtain silicon disulfide and ethanethioane (C2H5-S2-C2H5, C2H5-S3-C2H5). The latter is dissolved in benzene and filtered to prevent it from mixing with moisture.

Application of silicon sulfide SiS2 powder

Silicon Sulphide SiS2 powder is an acid soluble medium water source for compatibility with silicon sulfate. Sulfates are sulfates or esters formed by replacing one or two hydrogens with a metal. Widely used as potting and molding material. Various electronic and electrical components are widely used in automotive, machinery industry sealing, shockproof materials, textile, plastics, printing and other industries as rubber roller materials and caulking after being coated and potted with room temperature vulcanized silicone rubber. and sealing materials for the construction industry. .At the same time, it can be used for making soft molds and casting molds for epoxy resin, polyester resin, polystyrene, polyurethane, vinyl plastic, paraffin, low melting point alloy, etc.

Silicon sulfide SiS2 powder price

The price of silicon sulfide SiS2 varies randomly with production costs, transportation costs, international conditions, exchange rates, and market supply and demand for silicon sulfide SiS2. Tanki New Materials Co.,Ltd aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for silicon sulfide SiS2, please feel free to send for the latest silicon sulfide SiS2 price.

Silicon sulfide SiS2 powder suppliers

As a global supplier of silicon sulfide SiS2 powder, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced technology and engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metals, etc.), high-purity targets, functional ceramics, structural devices, and provides OEM services.

Silicon Sulfide Health & Safety Information
Signal WordDanger
Hazard StatementsH261-H300-H315-H319-H335
Hazard CodesF, T
Risk CodesN/A
Safety StatementsN/A
Transport InformationUN3134 4.3+6.1/PG II
Transport InformationN/A


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