Acrylic Acid → Acrylic Acid

HRID 1773805Notes

Reaction equation

HRID 1773805 reaction equation
[C:1]([OH:5])(=[O:4])[CH:2]=[CH2:3].[OH-].[Na+:7]>O>[C:1]([O-:5])(=[O:4])[CH:2]=[CH2:3].[Na+:7].[C:1]([OH:5])(=[O:4])[CH:2]=[CH2:3]

Participants

5

Reactant 2

HCID 6581Acrylic AcidHCID 14798Sodium Hydroxide

Product 2

HCID 6581Acrylic AcidHCID 4068533Sodium acrylate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

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.

Workup

  1. customIn a stirred 1 L reactor with a cooling jacket (Tj=20° C.) was carried out
  2. customThe reactor was equipped with a pH meter and changes during the titration

Sources & evidence

ORD record
ord-f38887281da2472692882baa513ab636
Source dataset
uspto-grants-2016_02
Patent number
US09255165B2

Reaction notes

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