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)

Safety Information

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

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

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(17697-12-0)Related Product Information

• PHENYLSELENOL
• Trimellitic Anhydride
• BENZENESELENINIC ACID
• HYDROGEN SELENIDE
• BENZENESELENINIC ANHYDRIDE
• METHANESELENINIC ACID
• Selenium
• methaneselenol
• BENZENESELENIC ANHYDRIDE