BENZENESELENINIC ANHYDRIDE
- CAS No.
- 17697-12-0
- Chemical Name:
- BENZENESELENINIC ANHYDRIDE
- Synonyms
- PHENYLSELENIC ANHYDRIDE;BENZENESELENINIC ANHYDRIDE;Benzene Selenenic Anhydride;Bisbenzeneseleninic anhydride;bis(phenylseleninic) anhydride;Bis(benzeneseleninic)anhydride;Benzeneseleninic anhydride,98%;BENZENESELENINIC ACID ANHYDRIDE;phenylseleninyl benzeneseleninate;Di(benzeneseleninic acid)anhydride
- CBNumber:
- CB4478591
- Molecular Formula:
- C12H10O3Se2
- Molecular Weight:
- 360.13
- MOL File:
- 17697-12-0.mol
- MSDS File:
- SDS
- Modify Date:
- 2023/4/23 13:52:06
| Melting point | 165-170 °C (lit.) |
|---|---|
| Boiling point | 184.2±23.0 °C(Predicted) |
| form | solid |
| Sensitive | Moisture Sensitive |
| BRN | 2332406 |
| CAS DataBase Reference | 17697-12-0(CAS DataBase Reference) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS06,GHS08,GHS09 |
|---|---|
| Signal word | Danger |
| Hazard statements | H301+H331-H373-H410 |
| Precautionary statements | P273-P301+P310+P330-P304+P340+P311-P314 |
| Hazard Codes | T,N |
| Risk Statements | 23/25-33-50/53 |
| Safety Statements | 20/21-28-45-60-61 |
| RIDADR | UN 3283 6.1/PG 2 |
| WGK Germany | 3 |
| F | 3-10-21 |
| HazardClass | 6.1 |
| PackingGroup | III |
| HS Code | 29310099 |
BENZENESELENINIC ANHYDRIDE price More Price(2)
BENZENESELENINIC ANHYDRIDE Chemical Properties,Uses,Production
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.
BENZENESELENINIC ANHYDRIDE Preparation Products And Raw materials
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|---|---|
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| TRC FINE CHEMS | 58 |
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| Triveni chemicals | 58 |
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| Hefei TNJ Chemical Industry Co.,Ltd. | 58 |