Chemistry informtion about  Vinyl butyrate (123-20-6) is:
IUPAC Name: Ethenyl butanoate
Synonyms: Butanoicacid,Ethenylester ; Vinyl Butanoate ; Vinyl Butyrate, Inhibited ;Vinylbutanoate ; Vinylester Kyseliny Maselne ; Vinylesterkyselinymaselne ; Butyric Acid Vinyl Ester ; N-Butyric Acid Vinyl Ester
MF: C₆H₁₀O₂
MW: 114.14
EINECS: 204-609-4 
Density: 0.904 g/cm³
Flash Point: 26.4 °C
Boiling Point: 120 °C at 760 mmHg
Vapour Pressure: 15.6 mmHg at 25°C 
Enthalpy of Vaporization: 35.81 kJ/mol
Refractive Index: n20/D 1.410
Storage temp.: 2-8°C
Following is the molecular structure of  Vinyl butyrate (123-20-6) is:

Vinyl butyrate (123-20-6) can be used to make plastics and paints.

Mildly toxic by inhalation and ingestion. A skin and eye irritant. A very dangerous fire hazard when exposed to HEAT, flame, or oxidizers. Explosive in the form of vapor when exposed to HEAT or flame. To fight fire, use alcohol foam, fog, mist, CO₂. When HEATed to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.
Hazard Codes:
F: Flammable
Xn: Harmful
Risk Statements:
R11: Highly flammable. 
R20: Harmful by inhalation.
Safety Statements:
S16: Keep away from sources of ignition. 
S24/25: Avoid contact with skin and eyes.
RIDADR UN 2838 3/PG 2
WGK Germany: 2
RTECS: ET7000000
HazardClass: 3.1
PackingGroup: II

DOT Classification:  3; Label: Flammable Liquid

General description about  Vinyl butyrate (123-20-6),it is a colorless liquid. Less dense than water. 
Air & Water Reactions: Highly flammable. Slightly soluble in water.
Reactivity Profile: It is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.
Health Hazard: May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Fire Hazard: Highly flammable: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.