Mineral Fillers & Pigments Available — Bulk Only

Potassium Bicarbonate (Potassium Hydrogen Carbonate)

CAS 298-14-6 · Formula CHKO3 · MW 100.115 g/mol

A mild alkali and carbon-dioxide source supplied for leavening, pH buffering, and dry-chemical fire suppression. Established uses include leavening in baking, acidity regulation and buffering as a food additive, and service as a dry-chemical fire-extinguishing agent.

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HS Code
2836.40
At a Glance
Material Family
Mineral Fillers & Pigments
Record Type
Pure compound
Primary Role
pH Adjustment · Biocidal Action
Solubility
Soluble
Functional Roles
POTASSIUM BICARBONATE
BUFFERING
Applications & Use Cases
  • Leavening: Carbon-dioxide source for baked goods
  • Acidity regulation: Food-additive buffer and pH adjuster
  • Fire suppression: Active agent in dry-chemical fire extinguishers
  • pH control: Mild alkali for process and formulation pH adjustment
Physical Properties
Melting Point
Decomposes before melting
Solubility
Soluble
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2836 . 40
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.36
Internationally harmonized (WCO HS)
Subheading 2836.40
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
298-14-6
Molecular Formula
CHKO3
Molecular Weight
100.115 g/mol
IUPAC Name
potassium hydrogen carbonate
INCI Name
POTASSIUM BICARBONATE
PubChem CID
InChI Key
TYJJADVDDVDEDZ-UHFFFAOYSA-M
Synonyms & Trade Names
Potassium bicarbonate Potassium hydrogen carbonate Potassium hydrogencarbonate Potassium acid carbonate Monopotassium carbonate CARBONIC ACID, MONOPOTASSIUM SALT Armicarb KHCO3 Kafylox Kaligreen Milstop Purple k INS NO.501(II) INS-501(II) E-501(II) Potassium bicarbonate (USP)
Full Description

Potassium bicarbonate (CAS 298-14-6) is the potassium salt of carbonic acid, KHCO3. Established uses include leavening in baking, acidity regulation and buffering as a food additive, and service as a dry-chemical fire-extinguishing agent. It also functions as a carbon-dioxide-releasing and pH-adjusting agent in processing and formulation.

Frequently Asked Questions

What is potassium bicarbonate used for?

Potassium bicarbonate (KHCO3, CAS 298-14-6) is used as a leavening (carbon-dioxide source) in baking, as a food-additive acidity regulator and buffer, as the active agent in dry-chemical fire extinguishers, and as a mild alkali for process and formulation pH control.

What is the chemical formula for potassium bicarbonate?

Potassium bicarbonate is KHCO3 (formula CHKO3), the potassium salt of carbonic acid, CAS 298-14-6. It is supplied here as a USP crystalline powder grade.

Is potassium bicarbonate the same as baking soda?

No. Baking soda is sodium bicarbonate (NaHCO3); potassium bicarbonate is the potassium analog (KHCO3). Both release carbon dioxide and act as leavening and pH agents, but they are distinct salts with different cations and specifications.

What does USP crystalline powder grade mean here?

USP refers to United States Pharmacopeia compendial specifications, and crystalline powder describes the physical form. We supply against the product CoA and SDS; request both to confirm the grade and lot specifications meet your application.

How is bulk potassium bicarbonate packaged and quoted?

It is typically supplied in bags, drums, or supersacks. Submit a bulk RFQ with your quantity and packaging for current pricing with CoA and SDS; HS classification is 2836.40.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.