sulphur trioxide

基本解釋

A new method to sulphonate dialkylbenzene directly by a stable liquid sulphur trioxide.
一種穩(wěn)定的液態(tài)三氧化硫直接磺化重烷基苯新方法。
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The sulfonation of linear heptane with sulphur trioxide (L) in the solvent of 1,2 dichloroethane is studied.
研究了庚烷與三氧化硫在1 ，2 二氯乙烷溶劑下的磺化反應(yīng)。
The high contents of moisture, dust and sulphur trioxide because of slurry feeding had been a challenge to normal operation.
裝置采用漿式進(jìn)料，煙氣中水分、塵和三氧化硫含量較高，給制酸系統(tǒng)帶來(lái)很大困難。

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 (Systematic name sulphur(VI) oxide)