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
References in periodicals archive ?
solar centrifugal particle receiver, sulphuric acid evaporator, sulphur trioxide decomposer and sulphur combustor) will be developed, constructed and operated at relevant scale.
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].