benzil

CAS No. 134-81-6

Formula: C14H10O2
Basic Info

Benzil (systematically known as 1,2-diphenylethane-1,2-dione) is the organic compound with the formula (C6H5CO)2, generally abbreviated (PhPhCO)2. This yellow solid is one of the most common diketones. Its main use is as a photoinitiator in polymer chemistry.

Formula
C14H10O2
Molecular Weight
210.228
Exact Mass
210.068
LogP
2.7522
PSA
34.14
Synonyms

Benzil

Ethanedione, diphenyl-

Dibenzoyl Zone Refined

CHC-12

Diphenylglyoxal Zone Refined

Diphenylethanedione

Esacure KBO

BIBENZOYL

Diphenylethanedione Zone Refined

DIBENZOYL

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Properties
Appearance & Physical State
yellow crystals
Density
1,521 g/cm3
Boiling Point
346-348ºC
Melting Point
94-97ºC
Flash Point
142.6ºC
Refractive Index
1.594
Water Solubility
0.5 g/L (20 ºC)
Stability
Stable. Combustible. Incompatible with strong oxidizing agents.
Storage Condition
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Vapor Pressure
1 mm Hg ( 128.4 °C)
Safety Info
RTECS
DD1925000
Safety Statements
S26-S36-S37/39
WGK Germany
2
Risk Statements
R36/37/38
HS Code
29143900
Hazard Codes
Spectrum
NMR Spectrum 1H NMR : Predict
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IR Spectrum IR : nujol mull
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Mass Spectrum Mass spectrum (electron ionization)
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ESR Spectrum ESR : ANION RADICAL, REDUCTION WITH NA IN THF
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UV Spectrum UV/Visible spectrum
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Analysis Methods
Normal alkane RI, non-polar column, temperature ramp
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Column Shape
Packed
Active Phase(℃)
OV-101
Retention index
1768.
Temperature Control
Method
temperature ramp
Comments
Celite 545 (0.20-0.25 mm), 10. K/min; Column length: 1.2 m; T<sub>start</sub>: 100. C; T<sub>end</sub>: 300. C
Reference
Zenkevich, I.G.Acevedo, J.M.Aguilera, I.R.Increments of Gas Chromatographic Retention Indices for Characterization of Organic ReactionsVestn. St. Petersb. Univ. Ser. 4: Fiz. Khim1991, 2, 51-56.

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