Reference

Method and apparatus for producing sulfurous acid solutions by combustion of sulfur and their use

Method and apparatus for producing sulfurous acid solutions by combustion of sulfur and their use. Jackson, Edward W. (Aapa Trust, USA). U.S. US 6689326 B1 10 Feb 2004, 24 pp., Cont.-in-part of U.S. Ser. No. 643,097. (English). (United States of America). CODEN: USXXAM. CLASS: ICM: C01B017-48. ICS: C01B017-69. 11104-48-6 and 7446-09-5 are cas registry numbers of chemicals which are used as reagents here. NCL: 422161000; 422160000; 423522000; 423539000. APPLICATION: US 2000-698747 27 Oct 2000. PRIORITY: US 1997-888376 7 Jul 1997; US 2000-643097 21 Aug 2000. DOCUMENT TYPE: Patent CA Section: 49 (Industrial Inorganic Chemicals) Section cross-reference(s): 19, 58, 61 Sulfurous acid solns. are generated on-site and on-demand by combustion of elemental sulfur to produce sulfur gases which are passively introduced into a pressurized fluid line of an aq. soln. The high temp. concrete Saggregate is produced and used with suitable molds to form a hopper-burn chamber capable of withstanding the heat of molten sulfur. The sulfur gas generator can be used in agriculture to improve alk. irrigation water, dechlorinate water, or treat landfill deposits. .

Determination of volatile acidity in wines

Determination of volatile acidity in wines. Proposal for a simplified method by the oxidation of sulfurous acid before steam distillation. Schneyder, Josef; Pluhar, Gertrude (Landwirtsch.-Chem. Bundesversuchsanst., Vienna, Austria). Mitt. Hoeheren Bundeslehr- Versuchsanst. Wein- Obstbau, Klosterneuburg, 27(1), 14-17 (German) 1977. CODEN: MROFAW. DOCUMENT TYPE: Journal CA Section: 16 (Fermentations) The detn. of volatile acidity of wines was simplified by a process involving weak alkalification and oxidn. of the free and released fixed sulfurous acid [7782-99-2] with FeCl3 in an acid medium prior to steam distn. This method gives values 0.04g/L (0.01-0.06 g/L) higher (based on acetic acid), on the av., than the conventional method because of the presence of sulfurous acid-simulating I-reducing substances in the conventional process.