Comparing benzoic acid and sodium benzoate on an acid-equivalent basis

Set up the comparison

Record chemical form, assay and calculation basis, then convert benzoic acid and sodium benzoate to equal acid equivalents. Evaluate solubility and final pH separately.

Measurements to record

Melting range (°C). Check free-acid identity and the analytical method. Assess dissolution and distribution in the intended application separately. Dissolution or dispersion behavior (min or % residue). Fix addition rate, water composition, agitation, temperature and standing time. Compare residue and precipitate. Record the sample ID and method revision for repeat testing.

Interpreting the results

Use the applicable destination-market review for the intended category. Equal acid equivalents do not in themselves establish permission or shelf life.

What to record

• Form
• Reported assay
• Acid equivalent
• Dissolution conditions
• Final pH

Technical references

• ENVO: Benzoic Acid product information ↗

Products and processes