ChemicalBook--->CAS DataBase List--->1760-46-9

1760-46-9

1760-46-9 Structure

1760-46-9 Structure
IdentificationBack Directory
[Name]

(2,2-diphenylacetyl) 2,2-diphenylacetate
[CAS]

1760-46-9
[Synonyms]

Diphenylacetic Anhydride
DiphenylaceticAnhydride>
Benzeneacetic acid, a-phenyl-, anhydride
(2,2-diphenylacetyl) 2,2-diphenylacetate
Benzeneacetic acid, α-phenyl-, 1,1'-anhydride
[Molecular Formula]

C28H22O3
[MDL Number]

MFCD00039636
[MOL File]

1760-46-9.mol
[Molecular Weight]

406.47
Chemical PropertiesBack Directory
[Melting point ]

96.0 to 100.0 °C
[Boiling point ]

182°C/3mmHg(lit.)
[density ]

1.0946 (rough estimate)
[refractive index ]

1.5460 (estimate)
[solubility ]

soluble in Toluene
[form ]

powder to crystal
[color ]

White to Almost white
[EPA Substance Registry System]

Diphenylacetic acid anhydride (1760-46-9)
Safety DataBack Directory
[Symbol(GHS) ]


GHS07
[Signal word ]

Warning
[Hazard statements ]

H315-H319
[Precautionary statements ]

P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
[HS Code ]

2916.39.7900
Questions And Answer(Q&A)Back Directory
[preparation]

To a flask containing 50 gm (0.236 mole) of diphenylacetic acid is added 50 gm (0.49 mole) of acetic anhydride and the solution refluxed for 2 hr. The excess acetic anhydride is removed by distillation and the thick brown liquid residue is treated with ether to cause crystallization of the anhydride product. The crystals are filtered, washed with cold ether, and dried to afford 43-44 gm (90-92%), m.p. 98°C. The product can also be distilled at 182°C (3.0 mm Hg).
Preparation of Diphenylacetic Anhydride
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