三氧化硫 (CAS No.7446-11-9)
- 物化性质
- 无色油状液体，有强烈刺激性气味，具有强氧化性，在空气中发烟，溶于水生成硫酸并放出大量热。熔点16.8°C，沸点44.8°C，相对密度约1.92（液态）。
- 外观
- 无色透明液体（优等品）。
English description（英文原文，共 1102 字符）
Product Name:Sulfur trioxide
English Name:Sulfur trioxide
CAS No.:7446-11-9
Aliases:Sulfuric anhydride
Molecular Formula:SO3
Physical Properties:Colorless oily liquid with a strong pungent odor, strong oxidizing property, fuming in air, dissolving in water to form sulfuric acid with considerable heat release. Melting point 16.8°C, boiling point 44.8°C, relative density about 1.92 (liquid).
Uses:Mainly used for sulfonation and sulfation of organic compounds, as a reactant in the production of surfactants and ion exchange resins; also used in the synthesis of sulfonamides, production of dye intermediates, and refining of petroleum lubricating fractions.
Technical Specifications:
Appearance: colorless transparent liquid (premium grade).
Mass fraction of sulfur trioxide: ≥99.7% for premium grade, ≥99.5% for first grade, ≥99.0% for qualified grade.
Mass fraction of sulfur dioxide: ≤0.20% for premium grade, ≤0.40% for first grade.
Mass fraction of ash: ≤0.05% for premium grade, ≤0.40% for first grade.
Mass fraction of iron (Fe): ≤0.020% for premium grade, ≤0.030% for first grade.
English Name:Sulfur trioxide
CAS No.:7446-11-9
Aliases:Sulfuric anhydride
Molecular Formula:SO3
Physical Properties:Colorless oily liquid with a strong pungent odor, strong oxidizing property, fuming in air, dissolving in water to form sulfuric acid with considerable heat release. Melting point 16.8°C, boiling point 44.8°C, relative density about 1.92 (liquid).
Uses:Mainly used for sulfonation and sulfation of organic compounds, as a reactant in the production of surfactants and ion exchange resins; also used in the synthesis of sulfonamides, production of dye intermediates, and refining of petroleum lubricating fractions.
Technical Specifications:
Appearance: colorless transparent liquid (premium grade).
Mass fraction of sulfur trioxide: ≥99.7% for premium grade, ≥99.5% for first grade, ≥99.0% for qualified grade.
Mass fraction of sulfur dioxide: ≤0.20% for premium grade, ≤0.40% for first grade.
Mass fraction of ash: ≤0.05% for premium grade, ≤0.40% for first grade.
Mass fraction of iron (Fe): ≤0.020% for premium grade, ≤0.030% for first grade.
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常见问题
- 三氧化硫的 CAS 号是多少？
- 三氧化硫的 CAS 号是 7446-11-9。
- 三氧化硫的分子式和分子量是什么？
- 三氧化硫的分子式为 SO3。
- 三氧化硫的英文名称是什么？
- 三氧化硫的英文名称为 Sulfur trioxide。
- 三氧化硫还有哪些别名？
- 三氧化硫又称 硫酸酐、硫酐。
- 三氧化硫有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条三氧化硫供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- 三氧化硫的供应商主要分布在哪些地区？
- 三氧化硫的供应商主要分布在 上海市（1 条） 等地。
- 三氧化硫有哪些级别可选？
- 平台上三氧化硫的供应级别包括 工业级。
- 三氧化硫的报价单位是什么？
- 三氧化硫的报价单位主要有 千克。
- 哪里可以查到三氧化硫的价格？
- 掌上化工三氧化硫产品页汇总了各供应商的最新报价与规格，地址：/chemicals/7446-11-9/。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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