Manufacturing Process Phase A: Combine all ingredients of phase A and raise the pH to 11 to dissolve the cinnamic acid completely. Afterwards, adjust the pH to 5.5 +_ 0.05 by adding Citric Acid. Phase B: Add phase B to phase A while stirring. Stir until everything is completely dissolved. Phase C: Prepare phase C and heat both phases separately to 75 °C. Add phase C to phase A/B under stirring and homogehas not