Potassium Bicarbonate

AKA: 298-14-6, Potassium hydrogen carbonate, Potassium hydrogencarbonate, Potassium acid carbonate, Monopotassium carbonate, CARBONIC ACID, MONOPOTASSIUM SALT, Armicarb, KHCO3, Kafylox
Synthetic
Clean
OriginPotassium bicarbonate is produced from potassium carbonate, a mineral-derived compound in the alkali metal family. It is synthesized by carbonating potassium carbonate solutions with carbon dioxide gas under controlled conditions.
Potassium bicarbonate is a white, crystalline, slightly alkaline and salty substance. It is produced by the passage of carbon dioxide through an aqueous potassium carbonate solution. It is used in medicine as an antacid. It is registered in the FDA under the section of suitable, safe and effective ingredients for OTC antacids. This FDA denomination classifies potassium bicarbonate as a GRAS ingredient.
Solubility Soluble
Formula
CHKO3
Mol. Weight
100.11
CAS #
298-14-6
Form
Powder
State
Liquid; Dry Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Buffering
Stabilizes pH
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Eye Irritant
1 study / 1 not irritating (CIR 722)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 722)
Skin Irritant in Testing
2 studies / 2 irritating / reactions slight to moderate (CIR 722)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2022
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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