Propionate

Propionate

Names
IUPAC name Propionate
Other names Propanoate, Propanoic acid, ion(1-)
Identifiers
CAS Number	72-03-7
3D model (JSmol)	Interactive image
ChemSpider	94556
PubChem CID	104745
CompTox Dashboard (EPA)	DTXSID90222279
InChI InChI=1S/C3H6O2/c1-2-3(4)5/h2H2,1H3,(H,4,5)/p-1 Key: XBDQKXXYIPTUBI-UHFFFAOYSA-M InChI=1S/C3H6O2/c1-2-3(4)5/h2H2,1H3,(H,4,5)/p-1 Key: XBDQKXXYIPTUBI-UHFFFAOYSA-M
SMILES CCC(=O)[O-]
Properties
Chemical formula	C3H5O2
Molar mass	73.071 g·mol−1
Appearance	Colorless, oily liquid
Density	0.993 g/mL at 20°C
Melting point	−21.5 °C (−6.7 °F; 251.7 K)
Boiling point	141.1 °C (286.0 °F; 414.2 K)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Flammable, Corrosive
Flash point	52 °C (126 °F; 325 K)
Autoignition temperature	465 °C (869 °F; 738 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

The propionate or propanoate ion is C₂H₅COO⁻ (the conjugate base of propionic acid).

A propionic or propanoic compound is a small salt or ester of propionic acid. In these compounds, propionate is often written in shorthand, as CH₃CH₂CO₂ or simply EtCO₂.

Propionates should not be confused with propenoates (commonly known as acrylates), the ions/salts/esters of propenoic acid (also known as 2-propenoic acid or acrylic acid).

Examples

• Sodium propionate, NaC₂H₅CO₂
• Methyl propionate, (C₂H₅(CO)OCH₃)
• Calcium propionate, Ca(C₂H₅CO₂)₂
• Potassium propionate, KC₂H₅CO₂
• Fluticasone propionate, C₂₅H₃₁F₃O₅S