sulphur trioxide


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Related to sulphur trioxide: sulphur dioxide

sulphur trioxide

n
(Elements & Compounds) 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
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References in periodicals archive ?
The Planning (Hazardous Substances) Act 1990 The Planning (Hazardous Substances) Regulations 1992 (Regulation 6) Notice of Application for Hazardous Substances Consent I give notice that Vertellus Specialties UK Ltd is applying to the Stockton-on-Tees Borough Council for hazardous substances consent to increase the maximum quantity of Sulphur Trioxide from 20MT to 35MT.
The company's proprietary TIFI(R) Targeted In-Furnace Injection technology is to be installed on a large coal-fired boiler to decrease problems caused by the formation of sulphur trioxide.
During the combustion of coal, minor constituents are also oxidized & are converted to sulpher dioxide and sulphur trioxide. To avoid formation of SOx compounds, limestone has been used [8-11].