2-ACETYLBUTYROLACTONE

PRODUCT IDENTIFICATION
CAS NO.
517-23-7

2-ACETYLBUTYROLACTONE

EINECS NO. 208-235-2
FORMULA C6H8O3
MOL WT. 128.13

H.S. CODE

  

TOXICITY

  
SYNONYMS 3-Acetyl-dihydro-2(3H)-furanone;
ABL; 2-Acetyl-gamma-butyrolactone; 3-Acetyloxolane-2-one;
SMILES

 

CLASSIFICATION

  

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE clear to slightly yellow liquid, ester like odor
MELTING POINT  
BOLING POINT

211 C (Decomposes)

SPECIFIC GRAVITY 1.185
SOLUBILITY IN WATER 200 g/l at 20 C
pH 3.5 - 4.5
VAPOR DENSITY

 

AUTOIGNITION  

REFRACTIVE INDEX

 1.4580 - 1.4620
NFPA RATINGS  
FLASH POINT

 

STABILITY Stable under ordinary conditions

APPLICATIONS

Lactone, Lactam, Lactim

Lactone is an internal cyclic monoester (anhydride) derived from the hydroxyl and carboxyl radicals of gamma or delta hydroxy acids by the removal of a H2O between a carboxyl and a hydroxyl group in the same molecule; gamma-hydroxybutyric acid forms gamma-butyrolactone and delta-hydroxydecanoic acid forms delta-decalactone spontaneously. In result, prefixes describe the ring size: beta- is for 4-membered ring), gamma- , 5-membered, and delta-, 6-membered ring. Lactam (a cyclic amide) is the nitrogen analog of lactone. Gamma-aminobutyric acid forms gamma-butyrolactam (also called 2-pyrrolidinone). Lactim is the tautomeric enol form of lactam. Lactam structure, a heteroatomic cyclic amide compound, is an important part in antibiotics such as penicillin. These structures, cyclic esters and analogues, are active nucleuses in pharmacological activity and flavorings. Their good solvency properties also useful in industrial application. Lactams have big demand in artificial fibre industry. They are polymerizable and used as nylon precursors.

An application exmaple of 2-Acetylbutyrolactone as an intermediate is for the synthesis 3,4-disubstituted pyridines
SALES SPECIFICATION

APPEARANCE

 clear to slightly yellow liquid
ASSAY

99.0% min

MOISTURE

0.2% min
TRANSPORTATION
PACKING 240kgs in drum
HAZARD CLASS  
UN NO.  
OTHER INFORMATION

Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 24/25