Bromobenzenesulfonic acids
| Bromobenzenesulfonic acids | ||||||
| Surname | 2-bromobenzenesulfonic acid | 3-bromobenzenesulfonic acid | 4-bromobenzenesulfonic acid | |||
| other names | o -Bromobenzenesulfonic acid | m -Bromobenzenesulfonic acid | p -bromobenzenesulfonic acid | |||
| Structural formula |
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| CAS number | 63468-57-5 (as sodium salt ) 63468-58-6 (as potassium salt ) |
138-36-3 and 79326-93-5 (as monohydrate ) 66788-58-7 (as potassium salt) |
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| PubChem | 113282 | 13086410 | 78717 | |||
| Molecular formula | C 6 H 5 BrSO 3 | |||||
| Molar mass | 237.07 g mol −1 | |||||
| Physical state | firmly | |||||
| Melting point | 88-90 ° C | |||||
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GHS labeling |
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Monohydrate
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| H and P phrases | see above | see above | 314 | |||
| no EUH phrases | no EUH phrases | no EUH phrases | ||||
| see above | see above | 280-305 + 351 + 338-310 | ||||
The bromobenzenesulfonic acids form a group of substances in chemistry that is derived from both benzenesulfonic acid and bromobenzene . The structure consists of a benzene ring with an attached sulfonic acid group (–SO 2 OH) and bromine (–Br) as substituents . Their different arrangement ( ortho , meta or para ) results in three constitutional isomers with the empirical formula C 6 H 5 BrSO 3 .
presentation
m -Bromobenzenesulfonic acid can be obtained by reacting benzenesulfonic acid with bromine and iron (III) bromide . o - and p -Brombenzolsulfonsäure can be prepared by reaction of benzene with bromine and iron (III) bromide, followed by sulfonation with sulfuric acid are obtained, whereby both isomers are formed.
Individual evidence
- ↑ Zvi Rappoport (Ed.): CRC Handbook of Tables for Organic Compound Identification . 3 rd Edition, CRC Press / Taylor and Francis, Boca Raton, FL, 1967, ISBN 0-8493-0303-6 , Organic Derivatives of Sulfonylamides and Sulfonylanilides, S. 394th
- ↑ Data sheet 4-Bromobenzenesulfonic acid monohydrate from Sigma-Aldrich , accessed on April 26, 2011 ( PDF ).
- ↑ Organic syntheses, Chapter 15 (PDF file; 391 kB).
- ^ The organic chemistry problem solver, by Max Fogiel, Research and Education Association, ISBN 0-87891-512-5 .
Web links
- Patent US7049464 : Process for producing of an aminoalkylsulfonic acid and a method of salt exchange for a salt thereof. Applied on August 27, 2003 , published on May 23, 2006 , Applicant: Wako Pure Chemical Industries, Inventor: Takuhiro Kimura, Tsutomu Tani, Reiji Miyahara.