Benzil , 98% , 134-81-6

Synonym(s):
Benzil;Dibenzoyl;Diphenylethanedione

CAS NO.：134-81-6

Empirical Formula: C14H10O2

Molecular Weight: 210.23

MDL number: MFCD00003080

EINECS: 205-157-0

PRODUCT Properties

• Melting point: 94-95 °C(lit.)
• Boiling point: 346 °C
• Density: 1,521 g/cm³
• vapor pressure: 1 mm Hg ( 128.4 °C)
• refractive index: 1.5681 (estimate)
• Flash point: 346-348°C
• storage temp.: Store below +30°C.
• solubility: <0.5g/l
• form: Crystalline Powder
• color: White
• Water Solubility: 0.5 g/L (20 ºC)
• Merck: 14,1078
• BRN: 608047
• Dielectric constant: 13.0（94℃）
• Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
• InChIKey: WURBFLDFSFBTLW-UHFFFAOYSA-N
• CAS DataBase Reference: 134-81-6(CAS DataBase Reference)
• NIST Chemistry Reference: Ethanedione, diphenyl-(134-81-6)
• EPA Substance Registry System: Benzil (134-81-6)

Description and Uses

Benzil is used as a pharmaceutical intermediate and uv curing resin photosensitizer. In polymer chemistry, it is used as a photoinitiator. Further, it serves as a potent inhibitor of human carboxylesterases. It is used in the preparation of diketimines by reacting with amines. It is also involved in the famous benil-benzilic acid rearrangement. In addition this, it reacts with 1,3-diphenylacetone to get tetraphenylcyclopentadienone.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319
• Precautionary statements: P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313
• Hazard Codes: Xi
• Risk Statements: 36/37/38
• Safety Statements: 26-36-37/39
• WGK Germany: 2
• RTECS: DD1925000
• F: 10
• Hazard Note: Irritant
• TSCA: Yes
• HS Code: 29143900
• Toxicity: LD50 orally in Rabbit: 2710 mg/kg