| Identification | More | [Name]
BENZENESELENINIC ANHYDRIDE | [CAS]
17697-12-0 | [Synonyms]
BENZENESELENINIC ACID ANHYDRIDE
BENZENESELENINIC ANHYDRIDE
PHENYLSELENIC ANHYDRIDE
bis(phenylseleninic) anhydride
R(-)-3-BROMO CAMPHOR-8-SULFONIC AMMONIUM SALT
BENZENESELENINIC ANHYDRIDE: TECH., 70%
Benzene Selenenic Anhydride
1,3-Diphenyl-2-oxa-1,3-diselena(IV)propane-1,3-dione
Bis(benzeneseleninic)anhydride
Bisbenzeneseleninic anhydride
Di(benzeneseleninic acid)anhydride | [EINECS(EC#)]
241-701-3 | [Molecular Formula]
C12H10O3Se2 | [MDL Number]
MFCD00001991 | [Molecular Weight]
360.13 | [MOL File]
17697-12-0.mol |
| Safety Data | Back Directory | [Hazard Codes ]
T,N | [Risk Statements ]
R23/25:Toxic by inhalation and if swallowed .
R33:Danger of cumulative effects.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . | [Safety Statements ]
S20/21:When using, do not eat, drink or smoke .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet . | [RIDADR ]
UN 3283 6.1/PG 2
| [WGK Germany ]
3
| [F ]
3-10-21 | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
29310099 |
| Hazard Information | Back Directory | [Chemical Properties]
WHITE TO LIGHT BEIGE POWDER | [Uses]
Benzeneseleninic acid anhydride was used to oxidize hydrazines to afford azo-compounds. | [General Description]
Oxidation of phenols by benzeneseleninic acid anhydride yields ortho-quinones. Benzeneseleninic anhydride acts as a mild oxidant for the conversion of benzylic hydrocarbons into aldehydes or ketones. | [Purification Methods]
When the anhydride is recrystallised from *C6H6 it has m 124-126o, but when this is heated at 140o/1hour in a vacuum or at 90o/2hours it has m 164-165o and gives a solid m 124-126o when then recrystallised from *C6H6. Both depress the melting point of the acid PhSeO2H. If the high melting anhydride is dissolved in *C6H6 and seeded with the high melting anhydride, the high melting anhydride crystallises out. It readily absorbs H2O to form the acid (PhSeO2H, m 122-124o). Because of this the commercial anhydride could contain up to 30% of the acid. It is best purified by converting to the HNO3 complex (m 112o) and heating this in vacuo at 120o/72hours to give the anhydride as a white powder m 164-165o. Alternatively heat the anhydride in vacuo at 120o/72 hours until the IR shows no OH band. [Ayvrey et al. J Chem Soc 2089 1962, Barton et al. J Chem Soc, Perkin Trans 1 567 1977, Beilstein 11 H 422, 11 I 110, 11 III 716, 11 IV 708.] TOXIC solid. |
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