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dibenzoylmethane

CAS No.: 120-46-7
Synonyms:
Formula: C15H12O2
Exact Mass: 224.08400
Molecular Weight: 224.25500
PSA: 34.14000
LogP: 3.14230
Reference Price: $62/kg Post Buying Request
Description Feedback
1,3-Diphenyl-1,3-propanedione (dibenzoylmethane, DBM) is an aromatic 1,3-diketone derivative of acetylacetone (acac), where both methyl groups in acac have been substituted by phenyl groups. It is a white solid melting at 77−78°C. Similar to acac, DBM exists in two tautomeric forms, with the keto-enol equilibrium of DBM shifting strongly towards the enol form, particularly in non-polar solvents such as benzene. This is the result of the stability of the intramolecular hydrogen bond in the cis-enol form which is further resonance-stabilized by conjugation with phenyl rings. Due to its high photostability, derivatives of DBM such as avobenzone, have found applications as sunscreen products.

Properties Feedback
Appearance & Physical State:yellowish-white powder
Melting Point:75-79ºC
Boiling Point:219-221ºC (18 mmHg)
Flash Point:146.9ºC
Refractive Index:1.623
Stability:Stable. Incompatible with strong oxidizing agents.
Storage Condition:Store at RT.
Vapor Pressure:1.63E-06mmHg at 25°C

Safety Info Feedback
RTECS:TZ1930000
Safety Statements:S24/25
HS Code:2914399090
WGK Germany:3
Risk Statements:R36/37/38
Hazard Codes:Xi

MSDS


Synthesis Route Total: 123 Synthesis Route
 
19221-93-3
100-63-0
~99%
1068-57-1
120-46-7
View Detail
 
19221-93-3
~99%
1068-57-1
120-46-7
View Detail

Precursor and Product