[chemist-twins]

@yyy @PhilGeis

Interesting! Thank you both for your inputs.

[chemist-twins]

Thank you a lot for ur help. I appreciate your efforts

[chemist-twins]

Yes, at the moment we use 500ppm. I see, we will consider switching to Na benzoate.. we have a mixture of Na benzoate and potassium sorbate. I checked and find out at ulprospector, “at a temperature above 60°C, potassium sorbate will begin to sublime”. I can’t incorporate the mixture at less than 70°C (filling temperature).. if we couldn’t find a supplier that offer Na benzoate alone, could i keep using benzoic acid? At what ppm and pH?

[chemist-twins]

Thank you, fekher.. i appreciate your help

[chemist-twins]

Benzoic acid were added by making a pre-mix of propylene glycol and all preservatives and adding the pre-mix to the tank at 75°C

[chemist-twins]

Thank you for your insight, we are using benzoic acid at 0.05% at pH 5. 5000ppm should be enough if it was benzoic acid or Na benzoate?

It’s water-based, there’s no emulsion

[chemist-twins]

Thank you for your helpful reply, i will follow your advice. currently I’m using benzoic acid and have sodium benzoate in stock, should i increase benzoic acid percent to 0.5% or add sodium benzoate at 0.5%?