Sulphuric anhydride

sulphur trioxide. See under Sulphur.

See also: Sulphuric

References in periodicals archive ?
As many as 66.7 percent of all hazardous substances emitted into the atmosphere were carbohydrogens, 12.1 percent - nitrogen oxides, 9.7 percent - carbon monoxide, 0.4 percent - sulphuric anhydride, the rest were other pollutants.
On the other hand, the Committee supports the rapporteur in refusing to add sulphuric anhydride, a chemical for adding to marinated fruits and vacuum-packed sweetcorn, or the use of a form of oxydated amidon in baby food.