硒 (CAS No.7782-49-2)
- 物化性质
- 外观为灰色或暗红色粉末，或黑色玻璃状物质，硬而脆，属黑灰色六方晶系金属。熔点217℃，沸点(684.9±1.0)℃，相对密度4.81，饱和蒸气压0.13kPa(356℃)。粉状或颗粒状，纯净均匀，无泥土等杂质，成分稳定。
- 纯度
- ≥99.9%
English description（英文原文，共 1093 字符）
Product Name:Selenium
English Name:Selenium
CAS No.:7782-49-2
Aliases:Selenium powder
Molecular Formula:Se
Physical Properties:Gray or dark red powder, or black glassy substance, hard and brittle, belonging to black-gray hexagonal crystal metal. Melting point 217°C, boiling point (684.9±1.0)°C, relative density 4.81, saturated vapor pressure 0.13 kPa (356°C). Powder or granular form, pure and uniform, free from soil and other impurities, with stable composition.
Uses:Used for preparing selenium compounds, photosensitive materials, semiconductor materials, metallurgical additives, and glass colorants. In silicon-based delay compositions, selenium powder improves combustion accuracy by composite actions such as heat absorption, deoxidation, covering, penetration, and filling, optimizing the pyrotechnic system. Also used as a high-purity analytical reagent and in the electronics industry.
Technical Specifications:
Purity: ≥99.9%
Iron (Fe) content: ≤0.003%
Arsenic (As) content: ≤0.001%
Tellurium (Te) content: ≤0.1%
Particle size (-60 mesh): ≥85%
Moisture (H2O): ≤0.02%
English Name:Selenium
CAS No.:7782-49-2
Aliases:Selenium powder
Molecular Formula:Se
Physical Properties:Gray or dark red powder, or black glassy substance, hard and brittle, belonging to black-gray hexagonal crystal metal. Melting point 217°C, boiling point (684.9±1.0)°C, relative density 4.81, saturated vapor pressure 0.13 kPa (356°C). Powder or granular form, pure and uniform, free from soil and other impurities, with stable composition.
Uses:Used for preparing selenium compounds, photosensitive materials, semiconductor materials, metallurgical additives, and glass colorants. In silicon-based delay compositions, selenium powder improves combustion accuracy by composite actions such as heat absorption, deoxidation, covering, penetration, and filling, optimizing the pyrotechnic system. Also used as a high-purity analytical reagent and in the electronics industry.
Technical Specifications:
Purity: ≥99.9%
Iron (Fe) content: ≤0.003%
Arsenic (As) content: ≤0.001%
Tellurium (Te) content: ≤0.1%
Particle size (-60 mesh): ≥85%
Moisture (H2O): ≤0.02%
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常见问题
- 硒的 CAS 号是多少？
- 硒的 CAS 号是 7782-49-2。
- 硒的分子式和分子量是什么？
- 硒的分子式为 Se。
- 硒的英文名称是什么？
- 硒的英文名称为 Selenium。
- 硒还有哪些别名？
- 硒又称 硒粉。
- 硒有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条硒供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- 硒的供应商主要分布在哪些地区？
- 硒的供应商主要分布在 上海市（1 条） 等地。
- 硒有哪些级别可选？
- 平台上硒的供应级别包括 工业级。
- 硒的报价单位是什么？
- 硒的报价单位主要有 千克。
- 哪里可以查到硒的价格？
- 掌上化工硒产品页汇总了各供应商的最新报价与规格，地址：/chemicals/7782-49-2/。部分供应商价格为电议，可通过页面上的询价功能直接获取。
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