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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 516893Generated: October 26, 2026

Potassium Bicarbonate

https://huagongshe.com/en/chemical/516893

Potassium Bicarbonate molecular structure

Identifiers & Physical Properties

CAS No.17353-70-7
Molecular formulaCHKO3
Average molar mass100.115 g/mol
Monoisotopic mass99.95627537 g/mol
SMILESO=C([O-])O.[K+]
InChIKeyTYJJADVDDVDEDZ-UHFFFAOYSA-M
PubChem CID516893
ChEMBLCHEMBL2106975
ChEBICHEBI:81862
EC No.206-059-0
DTXSIDDTXSID0021177

Chemical & Physical Properties

Topological polar surface area60.4
Hydrogen bond donors1
Hydrogen bond acceptors3
Rotatable bonds0
Heavy atoms5
Formal charge0
Complexity33
Density2.17 @25 °C
SolubilitySolubleFreely soluble in water. Insoluble in ethanol
Melting pointDecomposes before melting
Physical DescriptionCBIDry PowderLiquidColourless crystals or white powder or granulesColorless or white solid[Merck Index] White odorless granules[Alfa Aesar MSDS]
Dissociation Constants6.37

Safety & Regulations

GHS classificationThis chemical does not meet GHS hazard criteria for 99.7% (300 of 301) of all reports.Not ClassifiedReported as not meeting GHS hazard criteria by 300 of 301 companies (only 0.3% companies provided GHS information). For more detailed information, please visit ECHA C&L website.Aggregated GHS information provided per 301 reports by companies from 3 notifications to the ECHA C&L Inventory.Reported as not meeting GHS hazard criteria per 300 of 301 reports by companies.There is 1 notification provided by 1 of 301 reports by companies with hazard statement code(s).Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Regulatory informationChemical: Carbonic acid, monopotassium saltCommission Regulation No 844/2012Carbonic acid, potassium salt (1:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Carbonic acid, potassium salt (1:1) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)2008/127, Reg. (EU) 2017/195, Reg. (EU) 2020/1160, Reg. (EU) 2021/1452, Reg. (EU) 2021/745, Reg. (EU) No 540/2011, Reg. (EU) No 735/2012Status: Active Update: 28-06-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/13190Potassium bicarbonate: Does not have an individual approval but may be used under an appropriate group standard
Other safety informationIMAP assessments - Carbonic acid, monopotassium salt: Human health tier I assessment
Hazards summaryNot irritating to skin or eyes of rabbitsEffects to bladder seen in feeding studies of rats due to alkalizing properties (urine pH > 8) and not to toxic properties of the compound itself[IUCLID] Causes adrenal cortex hyperplasia and changes in tubules in 13-week oral study of rats (218,400 mg/kg)[RTECS] May cause irritation[Alfa Aesar MSDS]
EPA Safer ChemicalChemical: Potassium bicarbonateGreen circle - The chemical has been verified to be of low concern based on experimental and modeled data.
Hazard Classes and CategoriesNot Classified
Protective Action Criteria (PAC)6.2 [mg/m3]68 [mg/m3]410 [mg/m3]
Toxicity summaryThe CIR Expert Panel concluded that the following 6 carbonate salts are safe in the present practices of use and concentration, as described in this safety assessment, when formulated to be non-irritating...Potassium Bicarbonate...Safe for use in cosmetics, with qualifications