2-ETHYL-1,3-CYCLOPENTANEDIONE

PRODUCT IDENTIFICATION
CAS NO. 823-36-9

2-ETHYL-1,3-CYCLOPENTANEDIONE
EINECS NO. 212-512-3
FORMULA C7H10O2
MOL WT. 126.15

H.S. CODE

  

TOXICITY

  
SYNONYMS 2-Ethylcyclopentane-1,3-dione; 2-Ethyl-1,3-cyclopentadione;
2-Etilciclopentano-1,3-diona; 2-éthylcyclopentane-1,3-dione;
SMILES

 

CLASSIFICATION

DIKETONES /

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE white to yellow crystalline powder

MELTING POINT

 173 - 176 C
BOILING POINT  
SPECIFIC GRAVITY  

SOLUBILITY IN WATER

  
pH

 
VISCOSITY  
AUTOIGNITION

 

REFRACTIVE INDEX

 
NFPA RATINGS  
FLASH POINT

 
STABILITY Stable under normal conditions. Moisture sensitive.

GENERAL DESCRIPTION & APPLICATIONS
1,3-Cyclopentanedione is a cyclic 1,3-diketone which two ketones are separated only by one carbon. The beta-ketone is stable as a conjugated enol rather than alpha-diketone due to the delocalization which makes the counter ion more stable and less likely to regain the proton. 1,3-Diketone and its esters contain active methylene groups which have relatively acidic alpha-protons due to H atom adjacent to two carbonyl groups. The reactivity of its methylene group provide the sequence of reactions of alkylation, hydrolysis of the esters and decarboxylation resulting in substituted ketones. The methylene group can be reacted to form amino-carbonyl compounds. 1,3-Diketone compounds (beta-ketones) include malonic acid, diethyl malonate, Meldrum's acid, and acetoacetic acid derivatives.

1,3-Cyclopentanedione is a versatile reagent for synthesis of perhydroazulenes, prostaglandin products (biologically active unsaturated 20-carbon fatty acids including a 5-carbon ring, derived enzymatically ), and Knoevenagel products.

SALES SPECIFICATION

APPEARANCE

 yellow crystalline powder

CONTENT

98.0% min

REFRACTIVE INDEX

 173 - 176 C
TRANSPORTATION
PACKING  
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 22-24/25