GB821355A - Improvements in the stabilization of liquid sulphur trioxide - Google Patents
Improvements in the stabilization of liquid sulphur trioxideInfo
- Publication number
- GB821355A GB821355A GB1910/57A GB191057A GB821355A GB 821355 A GB821355 A GB 821355A GB 1910/57 A GB1910/57 A GB 1910/57A GB 191057 A GB191057 A GB 191057A GB 821355 A GB821355 A GB 821355A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- sulphur trioxide
- diphenyl
- stabilization
- liquid sulphur
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Liquid sulphur trioxide or oleum of at least 80% strength is stabilized by incorporating therein not more than 2, preferably 0.1-1, wt. % of an aromatic or pyridine compound. A large number of suitable compounds are listed, including aromatic hydrocarbons, amines, aldehydes, acids, and acid anhydrides, phenols, sulphonated, phosphonated, or halogenated benzenes, pyridines, and other nitrogen compounds. Benzene, diphenyl, or benzoic acid are preferred, but the examples also refer to chlorobenzene, tetraphenylhydrazine, and phenyl isocyanate. The small amount of sludge or oily liquid formed by the addition may be removed by filtration or decantation. In one example (4) diphenyl is added to liquid SO3, the SO3 is distilled off, and the solid residue is used to stabilize more liquid SO3. The use of diaryl nitrosamines (see Specification 820,458) is disclaimed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US821355XA | 1956-01-25 | 1956-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB821355A true GB821355A (en) | 1959-10-07 |
Family
ID=22169289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1910/57A Expired GB821355A (en) | 1956-01-25 | 1957-01-18 | Improvements in the stabilization of liquid sulphur trioxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB821355A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3043658A (en) * | 1960-07-06 | 1962-07-10 | Laporte Chemical | Stabilisation of per compounds |
| JPS5121000B1 (en) * | 1971-07-21 | 1976-06-29 |
-
1957
- 1957-01-18 GB GB1910/57A patent/GB821355A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3043658A (en) * | 1960-07-06 | 1962-07-10 | Laporte Chemical | Stabilisation of per compounds |
| JPS5121000B1 (en) * | 1971-07-21 | 1976-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB935250A (en) | Improvements in or relating to photo reproduction coatings for printing plates | |
| BR8400333A (en) | LIQUID PESTIC COMPOSITES, EMPLOYMENT AND PROCESS TO COMBAT HARMFUL ORGANISMS | |
| ES2080106T3 (en) | DISPERSING AGENT, ITS USE AND SOLID SUBSTANCES COVERED WITH. | |
| GB821355A (en) | Improvements in the stabilization of liquid sulphur trioxide | |
| GB1175828A (en) | Thioethers and Production thereof | |
| US3098001A (en) | Acaricide agent | |
| SE306139B (en) | ||
| GB1434495A (en) | Pressure-sensitive record material | |
| GB1332005A (en) | Perfluoroalkyl-sulphonylaryl esters | |
| ES266949A1 (en) | Guanidine derivatives | |
| ES8104705A1 (en) | Liquid compositions of phosphoric and thiophosphoric pesticides stabilized to low and high temperatures | |
| EP0103738A3 (en) | Use of carbonyl compounds and/or heteroanalogous carbonyl compounds as stabilisers for solutions containing pyrocarbonic-acid dialkyl esters, and polyisocyanate preparations containing these compounds | |
| KR830010059A (en) | Method for preparing aromatic aminosulfonic acid | |
| GB964225A (en) | Improvements in or relating to the production of aromatic thioethers | |
| GB820659A (en) | Improvements relating to the sulphonation of phenols | |
| DE3763077D1 (en) | CLEANING AROMATIC HYDROCARBON HIOAMINES. | |
| US2868624A (en) | Stabilization of sulfur trioxide | |
| GB949374A (en) | A bis(chloroethyl) disulphide and compositions containing it | |
| GB896803A (en) | Process for the manufacture of water-insoluble quinacridones free from sulphonic acid groups | |
| JPS54132508A (en) | Stabilization of 1,1,1-trichloroethane | |
| US2386959A (en) | Stabilization of bis (alkylthiazyl) disulphides | |
| US1652339A (en) | Insecticide | |
| GB500549A (en) | Improvements relating to the selective destruction of weeds | |
| GB949852A (en) | Production of sulphonic acids of benzene, chlorobenzene, naphthalene and mono- and dialkyl benzenes | |
| ES256194A1 (en) | Method of killing fungi with bis (triphenyltin) oxide |