683-70-5

Basic information

• Product Name: 3-chlorobut-3-en-2-one
• Synonyms: 2-Chloro-1-buten-3-one; 3-CHLORO-3-BUTEN-2-ONE
• CAS NO: 683-70-5
• Molecular Formula: C₄H₅ClO
• Molecular Weight: 104.5349
• Mol File: 683-70-5.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 141.3°C at 760 mmHg
• Flash Point: 40.7°C
• Density: 1.067g/cm³
• Vapor Pressure: 5.88mmHg at 25°C
• Refractive Index: 1.424
• CAS DataBase Reference: 3-chlorobut-3-en-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-chlorobut-3-en-2-one(683-70-5)
• EPA Substance Registry System: 3-chlorobut-3-en-2-one(683-70-5)

Safety Data

• Hazardous Substances Data: 683-70-5(Hazardous Substances Data)

Upstream product

• 55949-61-6 trans-2,3-Dichloro-2,3-dimethyloxirane 
• 123-76-2 levulinic acid 

Downstream Products

• 553-90-2 Dimethyl oxalate 
• 96-35-5 glycolic acid methyl ester 
• 79-20-9 acetic acid methyl ester 
• 10076-48-9 methyl 2,2-dimethoxypropionate 
• 96-34-4 methyl chloroacetate 

Relevant articles and documents

Oxidative decarboxylation of levulinic acid by silver(I)/persulfate

The oxidative decarboxylation of levulinic acid (LA) by silver(I)/persulfate [Ag(I)/S2O82-] has been investigated in this paper. The effects of buffer solution, initial pH value, time and temperature and dosages of Ag(I)/S2O8 2- on the decarboxylation of LA were examined in batch experiments and a reaction scheme was proposed on basis of the reaction process. The experimental results showed that a solution of NaOH-KH2PO4 was comparatively suitable for the LA decarboxylation reaction by silver(I)/persulfate. Under optimum conditions (temperature 160 °C, pH 5.0, and time 0.5 h), the rate of LA conversion in NaOH-KH2PO4 solutions with an initial concentration of 0.01 mol LA reached 70.2%, 2-butanone (methyl ethyl ketone) was the single product in the gas phase and the resulted molar yield reached 44.2%.