Reference

Preparation and x-ray crystal structure of 2,1,3-benzothiadiazine derivative containing a dithiosulfone group

Preparation and x-ray crystal structure of 2,1,3-benzothiadiazine derivative containing a dithiosulfone group. Acheson, R. Morrin; Bryce, Martin R.; Das, Sabita; Dauter, Zbigniew; Rees, Anthony J.; Reynolds, Colin D. (Dep.Chemicals with cas numbers 88-68-6 and 1314-80-3 also play role. Biochem., Univ. Oxford, Oxford OX1 3QU, UK). J. Chem. Soc., Chem. Commun., (18), 1002-3 (English) 1983. CODEN: JCCCAT. ISSN: 0022-4936. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Section cross-reference(s): 75 Treatment of 2-H2NC6H4CONH2 with P4S10 in refluxing pyridine for 1.5 h gave 56% of the title compd. (I). The structure of I was confirmed by x-ray crystallog. study of its 1:1 pyridine adduct. .

Treating used motor oil and synthetic crude oil

Treating used motor oil and synthetic crude oil. Norman, George R. (USA ). U.S. US 4432865 A 21 Feb 1984,13 pp. Cont.-in-part of U.S. Ser. No. 342,350, abandoned. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C10M011-00.Several reagents with their cas registry numbers 7664-93-9 and 1314-80-3 are used here. NCL: 208183000. APPLICATION: US 82-446791 8 Dec 1982. PRIORITY: US 82-342350 25 Jan 1982. DOCUMENT TYPE: Patent CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Section cross-reference(s): 40, 67 A used motor oil or synthetic crude oil is purified by 1st drying the oil and then contg. the substantially anhyd. oil with ~0.1-5 wt.% of a polyfunctional mineral acid or anhydride and with ~0.1-5 wt.% of a polyhydroxy compd. to form 31 reaction products with contaminants in the oil. The reaction products are then removed. Thus, a used motor oil is heated 150-180° and allowed to settle for ~24 h to remove sludge. The sludge-free oil is centrifuged at 23,000 rpm, vacuum dried, and distd. in a short-path centrifugal still. The distillate is stirred with cellulose fibers (Alpha Cellulose Flock, Grade C #40), and P2S5 is added as the temp. is raised to 250°F in ~1 h. The oil is filtered, hydrotreated at ￡650° F over a CS2-activated Ni-contg. catalyst, filtered, and vacuum stripped at 380° F. The purified oil was superior to the virgin base stock in oxidn. stability and equiv. in most other properties. .