sulphur trioxide 三氧化硫 ; 三氧化硫化学品 ; 化学品
sulphur trioxide mist 三氧化硫烟雾
sulphur trioxide injection system 三氧化硫注射系统
Liquid sulphur trioxide 液体三氧化硫
stabilized sulphur trioxide 稳定三氧化硫
N a white corrosive substance existing in three crystalline forms of which the stable (alpha-) form is usually obtained as silky needles. It is produced by the oxidation of sulphur dioxide, and is used in the sulphonation of organic compounds. Formula: SO3 硫酐 (Systematic name sulphur(VI) oxide)
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