sulphur dioxide


  • WordNet 3.6
    • n sulphur dioxide a colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain
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Webster's Revised Unabridged Dictionary
  • Interesting fact: Joseph Priestley not only discovered oxygen, but he also discovered ammonia, carbon monoxide, hydrogen chloride, sulphur dioxide, and nitrous oxide. He was also the first person to isolate chlorine.
    • Sulphur dioxide (Chem) a colorless gas, SO2, of a pungent, suffocating odor, produced by the burning of sulphur. It is employed chiefly in the production of sulphuric acid, and as a reagent in bleaching; -- called also sulphurous anhydride, and formerly sulphurous acid.
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In literature:

Chlorine gas is made by the action of sulphuric acid and manganese dioxide on common salt.
"The Moving Picture Boys on the War Front" by Victor Appleton
Instead of using the gas, the sulphur dioxide may be applied in the form of a solution in water.
"The Dyeing of Woollen Fabrics" by Franklin Beech
Sulphur dioxide occurs in nature in the gases issuing from volcanoes, and in solution in the water of many springs.
"An Elementary Study of Chemistry" by William McPherson
We brought that and the glass, the cement, more lumber, and the drum of sulphur dioxide.
"The Forbidden Trail" by Honoré Willsie
Why is it necessary that the fabric be moist in order to be bleached by sulphur dioxide fumes?
"Textiles" by William H. Dooley
It may be prepared in the amorphous form by heating cobalt with sulphur dioxide, in a sealed tube, at 200 deg.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5" by Various
It burns when heated in air, forming the pentoxide and sulphur dioxide.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6" by Various
Sulphur dioxide escapes abundantly, and the outer flame is colored blue.
"The Elements of Blowpipe Analysis" by Frederick Hutton Getman
It burns with a pale blue flame to form carbon dioxide and sulphur dioxide.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3" by Various
The goods are left thus exposed to the sulphur dioxide overnight, when they are taken out and washed in water.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1" by Various

In news:

The two common air pollutants that acidify rain are sulphur dioxide and nitrogen oxide.

In science:

An experimental study of the role of radon and its daughter products in the conversion of sulphur dioxide into aerosol particles in the atmosphere.
A selection of papers with some relevance to the investigation of the Sun-Climate link: Papers on Data, Methods and Commentary
The first data set involves understanding the relation between the atmospheric ozone level and a variety of atmospheric pollutants (e.g., nitrogen dioxide, carbon dioxide, sulphur dioxide, etc.) and contain 8 predictors, and is studied in equation (2) of [Xia09].
On Testing Independence and Goodness-of-fit in Linear Models