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Potassium Citrate (Tripotassium Citrate, Anhydrous)

CAS 866-84-2 · Formula C6H5K3O7 · MW 306.39 g/mol

The anhydrous tripotassium citrate grade for buffering, sequestering, and emulsifying-salt applications. Established uses include acidity regulation and buffering, sequestrant and chelating duty, and stabilizer and emulsifying-salt function in food and beverage applications.

Part of Chelators & pH Adjusters · Acids & Salts · Stabilizers & Processing Aids
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HS Code
2918.15
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
Chelation / Sequestration · pH Adjustment
Solubility
1 G DISSOLVES IN 0.65 ML WATER
Functional Roles
Chelation / Sequestration pH Adjustment
INCI Name
POTASSIUM CITRATE
CosIng Functions
BUFFERINGCHELATING
Industries Served
Beauty & Personal Care Food & Beverage HI&I Cleaning Industrial Manufacturing Textiles Water Treatment
Applications & Use Cases
  • ▸ Acidity regulation: Food-additive buffer and pH adjuster
  • ▸ Sequestrant/chelating: Binds metal ions to stabilize formulations
  • ▸ Emulsifying salt: Stabilizer and emulsifying salt in food systems
  • ▸ Intermediate: Chemical intermediate
Physical Properties
Solubility
1 G DISSOLVES IN 0.65 ML WATER
pH
Between 7,5 and 9,0 (5 % aqueous solution)
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
2918 . 15
Chapter 29
Organic chemicals
Heading 29.18
Internationally harmonized (WCO HS)
Subheading 2918.15
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
866-84-2
Molecular Formula
C6H5K3O7
Molecular Weight
306.39 g/mol
IUPAC Name
tripotassium;2-hydroxypropane-1,2,3-tricarboxylate
INCI Name
POTASSIUM CITRATE
PubChem CID
13344
InChI Key
QEEAPRPFLLJWCF-UHFFFAOYSA-K
Synonyms & Trade Names
TRIPOTASSIUM CITRATE Kaliksir Potassium citrate anhydrous Litocit Porekal Kajos Urocit K Seltz-K K citrate Citric acid, tripotassium salt Potassium tribasic citrate ACALKA 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, tripotassium salt Anhydrous, Potassium Citrate
Full Description

Potassium citrate (CAS 866-84-2) is anhydrous tripotassium citrate, the potassium salt of citric acid. Established uses include acidity regulation and buffering, sequestrant and chelating duty, and stabilizer and emulsifying-salt function in food and beverage applications. It also serves as a chemical intermediate.

Frequently Asked Questions

What is potassium citrate USP FCC K used for?

This grade is anhydrous tripotassium citrate (CAS 866-84-2), the potassium salt of citric acid. In food, beverage, and industrial formulation it serves as an acidity regulator/buffer, a sequestrant and chelating agent for metal ions, and a stabilizer/emulsifying salt. It is also used as a chemical intermediate.

Is this anhydrous or monohydrate potassium citrate?

This is the anhydrous form (CAS 866-84-2, formula C6H5K3O7). It differs from tripotassium citrate monohydrate (CAS 6100-05-6), which contains water of crystallization. Confirm the CAS you need so we ship the correct grade.

What is the molecular weight of tripotassium citrate?

Anhydrous tripotassium citrate (C6H5K3O7) has a molecular weight of approximately 306.4 g/mol. The monohydrate (C6H7K3O8) is approximately 324.4 g/mol. We provide full identity data on the CoA and SDS.

What grades and packaging are available in bulk?

We supply USP/FCC-compliant anhydrous potassium citrate in industrial packaging including bags, drums, and totes, with a Certificate of Analysis per lot. Specify your required grade and volume for a quote.

What is the cost of bulk potassium citrate USP FCC K?

Bulk pricing varies by volume, packaging, and grade. Submit a quote request with your target quantity and we will return current pricing along with supporting CoA and SDS documentation; we do not list fixed retail prices.

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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.
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