Acrylic Acid → Acrylic Acid

Participants

Reaction Steps

In a stirred 1 L reactor with a cooling jacket (Tj=20° C.) was carried out a titration of acrylic acid (216 g, assay 98.7%, 2.961 mol) in water (284 g), with aqueous 47.8% sodium hydroxide (242 g, 2.892 mol) over 3 h. The reactor was equipped with a pH meter and changes during the titration were recorded. In FIG. 1, the pH of the solution is plotted against the composition of the solution. When the pH is about 6.2-6.3, a desired molar ratio between sodium acrylate and acrylic acid is obtained (97.5:2.5). This solution, which contains ˜37% w/w dissolved material (sodium acrylate and acrylic acid), is stable at room temperature for several days.

Provenance & Evidence