| CAS No.: | 231-957-4 |
|---|---|
| Formula: | Se |
| EINECS: | 231-957-4 |
| Certification: | REACH |
| Environmental Protection: | Yes |
| Function: | Sensor Function, Heat Resistance |
| Samples: |
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| Customization: |
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Audited Supplier 1. Company Introduction
RongSin specializes in manufacturing high purity and ultra high purity materials ranging from 99.999% (5N), 99.9999% (6N), 99.99995% (6N5), and in some cases up to 99.99999% (7N) and 99.999999% (8N), such as 8N Ga ingots. We can produce materials to specific grades including UP/UHP, semiconductor, electronic, deposition, fiber optic, and MBE grades. American Elements high purity metals, oxides, and compounds are crafted to meet the demanding needs of high technology applications and are ideal for use as dopants and precursor materials for thin film deposition, crystal growth of semiconductors, and synthesis of nanomaterials and applications such as advanced microelectronics,solar cells, fuel cells , and optical materials.
2. Technical capability
3. Product description
Se is a chemical element from the group of chalcohols. Gray metallic Se is considered the most stable modification. It has semi-metallic properties. The red Se is non-metallic and passes above 80°C into the gray metallic Se. Third modification is black Se. This converts above 80°C to gray metallic modification. In addition, se metal has six naturally occurring isotopes. Five of them are stable.
Se has a great economic meaning and is essential for all forms of life. In medicine, Se based preparations are used to treat skin diseases. To combat dandruff, Se is used as 1% Se sulfide SeS2 in shampoos. In the glass industry, Se metal comes to the production of Se ruby glass, which is used in signal and traffic light systems. Se also enjoys demand in the semiconductor industry.
RongSin specializes in producing high purity Se granules in ultra high purity for analytical standards in health and safety research and other commercial applications. Granules also exhibit the highest possible density and smallest possible average grain sizes for use in Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes including Thermal and Electron Beam (E-Beam) Evaporation, Low Temperature Organic Evaporation, Atomic Layer Deposition (ALD), Metallic-Organic and Chemical Vapor Deposition (MOCVD). Our standard granules are amorphous uniform pieces in sizes ranging from < 1 mm, 1-2 mm, and 3-5 mm. Materials are produced using crystallization, solid state and other ultra high purification processes such as sublimation. American Elements specializes in producing custom compositions for commercial and research applications and for new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into rod, bar, or plate form, as well as other machined shapes and through other processes such as nanoparticles and in the form of solutions and organometallics. We also produce Se as rod, pellets, powder, pieces, disc, ingot, wire, and in compound forms, such as oxide. Other shapes are available by request.
4. Product property
| Molecular Weight | 78.96 |
|---|---|
| Appearance | Gray to black solid |
| Melting Point | 217 °C |
| Boiling Point | 684.9 °C |
| Density | 4.79 g/cm3 |
| Solubility in H2O | N/A |
| Electrical Resistivity | 106 microhm-cm @ 0 °C |
| Electronegativity | 2.4 Paulings |
| Heat of Fusion | 1.22 Cal/gm mole |
| Heat of Vaporization | 3.34 K-cal/gm atom at 684.9 °C |
| Poisson's Ratio | 0.33 |
| Specific Heat | 0.767 Cal/g/K @ 25 °C |
| Tensile Strength | N/A |
| Thermal Conductivity | 0.00519 W/cm/K @ 298.2 K |
| Thermal Expansion | (25 °C) (amorphous) 37 µm·m-1·K-1 |
| Vickers Hardness | N/A |
| Young's Modulus | 10 GPa |
| Pure metal Se granules composition | |||||
| Model | 3N | 4.3N | Se.4N | Se.5N | Se.6N |
| Se(Min%) | 99.9 | 99.99 | 99.999 | 99.9999 | |
| Impurity | MAX PPM | ||||
| Cu | 10 | 5 | 3 | 0.2 | 0.05 |
| Ag | 30 | 5 | / | 0.2 | 0.05 |
| Mg | / | 10 | 8 | 0.5 | 0.1 |
| Sb | 10 | / | 5 | 0.5 | / |
| Ni | 20 | 10 | 5 | 0.2 | 0.05 |
| Bi | / | 10 | 5 | 0.5 | 0.05 |
| In | / | / | / | 0.5 | 0.05 |
| Fe | 400 | 10 | 10 | 0.5 | 0.1 |
| Cd | / | / | / | 0.2 | 0.05 |
| Te | 70 | 5 | 10 | 0.5 | 0.1 |
| SI | / | 10 | 9 | 0.5 | / |
| Al | 10 | 8 | 0.5 | 0.05 | |
| Pb | 300 | 10 | 5 | 0.5 | 0.05 |
| Sn | 10 | 5 | / | / | |
| S | 200 | 10 | 40 | / | / |
| As | 30 | 5 | / | / | / |
5. Application:
The main uses of Se are:
1). Quality
RongSin committed to supplying only the highest quality products. Selection of the best quality raw materials combined with stringent manufacturing controls assures you of reliable products. we maintain a sharp focus throughout every level of the organization to ensure that every facet of our customer's needs are fulfilled. Our dedication to the highest possible quality control and lot-to-lot consistency is equally matched by.
2). Variety/Flexibility
RongSin offers a variety of standard formulations, shapes and sizes. And, when you have the need, we adjust compositions, forms and quantities as necessary to meet your requirements. We listen to our customers and then put more than 20 years of accumulated know how into providing creative, cost efficient solutions for your most difficult metallurgical requirements.
3). Custom Powder metal for Research & Development
Many powder metal suppliers lack the capability in producing small order quantities for R&D purposes. With our unique test furnaces, RongSin New Materials is positioned to supply just that to companies and institutions who are testing the properties and feasibility of various alloy families. Furthermore, once a desired specification is met, we are also positioned in scaling up the production of the alloys to meet your production needs.
4). At The Lowest Cost
We want to both certify to the highest possible U.S. standards and supply materials at the lowest possible world price.
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Audited Supplier 
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