| Company Name: |
Energy Chemical Gold |
| Tel: |
400-0056266 |
| Email: |
marketing1@energy-chemical.com |
| Company Name: |
Energy Chemical |
| Tel: |
400-0056266 |
| Email: |
sales8178@energy-chemical.com |
Benzeneseleninic anhydride manufacturers
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| | Benzeneseleninic anhydride Basic information |
| | Benzeneseleninic anhydride Chemical Properties |
| Melting point | 165-170 °C (lit.) | | Boiling point | 184.2±23.0 °C(Predicted) | | storage temp. | RT, stored under nitrogen | | form | solid | | Appearance | White to off-white Solid | | Sensitive | Moisture Sensitive | | BRN | 2332406 | | InChI | InChI=1S/C12H10O3Se2/c13-16(11-7-3-1-4-8-11)15-17(14)12-9-5-2-6-10-12/h1-10H | | InChIKey | FHPZOWOEILXXBD-UHFFFAOYSA-N | | SMILES | C1([Se](O[Se](C2=CC=CC=C2)=O)=O)=CC=CC=C1 | | CAS DataBase Reference | 17697-12-0(CAS DataBase Reference) |
| 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 | | Storage Class | 6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects | | Hazard Classifications | Acute Tox. 3 Inhalation
Acute Tox. 3 Oral
Aquatic Acute 1
Aquatic Chronic 1
STOT RE 2 |
| | Benzeneseleninic anhydride Usage And Synthesis |
| 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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