Free Acid Calculator
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Free Acid Calculator
Background info and how to use:
http://www.labmuffin.com/2016/06/free-acid-calculator-for-exfoliants-at-specific-ph-levels/
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Put the details of your formulation into the yellow boxes, and the overall % of free acid in the product will appear in the green box.
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Concentration (%)
13.2Overall % Free Acid3.01%
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Note: Do not put "%" in the above box
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pH3.50
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AcidSalicylic
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Calculation StuffAcid Data
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AcidSalicylicAcidProtons
Molar Mass
pKa1pKa2pKa3
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Protons1Glycolic176.053.83
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Molar mass138.12Lactic190.083.86
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pKa12.97Mandelic1152.153.41
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pKa2Salicylic1138.122.97
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pKa3TCA1163.380.66
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Concentration (M)0.9556907037Ascorbic1176.124.1
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Free Acid0.2177745084Citric3192.123.134.766.39
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% Free Acid22.78713265Malic2134.093.45.2
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% Overall3.00790151
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Free Acid Calculator (updated for Polyprotics)
Sheet3
Copy of Free Acid Calculator (updated for Polyprotics)
Free Acid Calculator