3D model (
|Appearance||clear, colorless liquid|
|14 °C (57 °F; 287 K)|
|141 °C (286 °F; 414 K)|
|Main ||Corrosive (C),|
Dangerous for the
|68 °C (154 °F; 341 K)|
|429 °C (804 °F; 702 K)|
|US health exposure limits (|
|TWA 2 ppm (6 mg/m3) [skin]|
Except where otherwise noted, data are given for materials in their
Acrylic acid (
Because propane is a significantly cheaper raw material than propylene, considerable research efforts are being undertaken to develop a process based on the one-step selective oxidation of propane to acrylic acid.
Because acrylic acid and its esters have long been valued commercially, many other methods have been developed, but most have been abandoned for economic or environmental reasons. An early method was the hydrocarboxylation of acetylene ("
This method requires nickel carbonyl and high pressures of carbon monoxide. It[