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Acidulants and acidity regulators

Potassium acetate

Also known as Diuretic salt, Acetic acid, potassium salt, Potassium ethanoate

CAS 127-08-2Formula C2H3KO2Molar mass 98.14 g/molEC 204-822-2
GHS signal word: Warning. Pictograms: Harmful or irritant 214 suppliers listed Drug substance
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Potassium acetate chemical structure, C2H3KO2, CAS 127-08-2
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Flakes
Melting point
292 °C
Density
1.6 g/cm³
Solubility
Solubility in water, g/100ml at 20 °C: 256
HS code
291529
Category
Acidulants and acidity regulators
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Potassium acetate?

Plain description, key identifiers and synonyms

Potassium acetate is a potassium salt comprising equal numbers of potassium and acetate ions. It has a role as a food acidity regulator. It contains an acetate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
potassium acetate
CAS number
127-08-2 CAS number cross-checked
EC numbers
204-822-2, 686-264-3
Molecular formula
C2H3KO2
UNII
M911911U02
MDL number
MFCD00012458
INCI name
POTASSIUM ACETATE
InChIKey
SCVFZCLFOSHCOH-UHFFFAOYSA-M
InChI
InChI=1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
SMILES (canonical and isomeric)
CC(=O)[O-].[K+]

Synonyms

  • Diuretic salt
  • Acetic acid, potassium salt
  • Potassium ethanoate
  • Acetic acid, potassium salt (1:1)
  • Octan draselny
  • Kali aceticum
  • Potassium acetates
  • Potassium acetate in plastic container
  • INS NO.261
  • INS-261(I)
  • Acetate, Potassium
  • potassium, acetate
  • KOAc
  • Acetic acid potassium salt
  • AcOK
  • Potassium acetate, for molecular biology
  • Acetic acid (potassium 99%)
  • acetic acid potassium
  • Potassium acetate, meets analytical specification of Ph. Eur. BP E261
  • Potassium acetate, United States Pharmacopeia (USP) Reference Standard
  • Kaliumazetat
  • potasium acetate
  • potassium acetat
  • MeCO2K
  • CH3COOK
Show all 28 synonyms
  • Potassium acetate (JAN/USP)
  • Potassium Acetate ACS reagent
  • Potassium acetate, acs

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Flakesexp.
Melting point
292 °Cexp.
Density
1.6 g/cm³exp.
Solubility
Solubility in water, g/100ml at 20 °C: 256exp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
98.14 g/molcalc.
Exact mass
97.977 Dacalc.
LogP (octanol/water)
-4.24calc.
Topological polar surface area
40.13 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Potassium acetate suppliers

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All 214 suppliers
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Where suppliers are based

214 suppliers in 24 countries

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Potassium acetate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Chemical reaction regulator, pH regulating agent, Other, Lubricating agent, Anti-freeze agent, Defoamer, Laboratory chemicals, Intermediate.

Consumer uses: Anti-scaling agent, Soil amendments (fertilizers), Preservative, Flame retardant, Lubricating agent, Other, Anti-freeze agent.

Use classes: Processing Aids and Additives, Safer Chemical Classes, Food additives, Cosmetics.

Cosmetic ingredient, INCI name POTASSIUM ACETATE(film forming)

Roles

  • additive
  • food acidity regulator
  • food additive
  • food component
  • physiological role

Functional uses

  • Catalyst
  • Film former
  • Flavouring and nutrient
  • Processing aids not otherwise specified

Cosmetic functions

  • Film forming

Pharmacology

Potassium Acetate is the acetate salt form of potassium, an essential macromineral. Potassium maintains intracellular tonicity, is required for nerve conduction, cardiac, skeletal and smooth muscle contraction, production of energy, the synthesis of nucleic acids, maintenance of blood pressure and normal renal function. This agent has potential antihypertensive effects and when taken as a nutritional supplement may prevent hypokalemia.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • Active ingredient in FDA approved drug labels
  • Food additive

United States

  • Safer Choice ingredient list (USA)
  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Potassium acetate is traded under.

HS 2915.29Indicative HS code

Acetic acid and its salts, acetic anhydride, other

World exports in 2024
$336M
+10.0% vs 2023, imports $398M
2019 to 2024
Top exporters
  1. China28.0%
  2. Netherlands25.4%
  3. Germany11.4%
Top importers
  1. United States17.0%
  2. Malaysia13.3%
  3. Germany7.3%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Potassium acetate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Potassium acetate, based on the data on this page

What is Potassium acetate?

Potassium acetate is a potassium salt comprising equal numbers of potassium and acetate ions. It has a role as a food acidity regulator. It contains an acetate.

What is the CAS number of Potassium acetate?

The CAS registry number of Potassium acetate is 127-08-2.

What is the molecular formula and weight of Potassium acetate?

The molecular formula of Potassium acetate is C2H3KO2 and its molar mass is 98.14 g/mol.

What is Potassium acetate used for?

Industrial uses: Chemical reaction regulator, pH regulating agent, Other, Lubricating agent, Anti-freeze agent, Defoamer, Laboratory chemicals, Intermediate. Consumer uses: Anti-scaling agent, Soil amendments (fertilizers), Preservative, Flame retardant, Lubricating agent, Other, Anti-freeze agent.

Is Potassium acetate hazardous?

Potassium acetate carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Potassium acetate?

Potassium acetate is usually classified under HS code 291529 (Acetic acid and its salts, acetic anhydride, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Potassium acetate?

CompoundList lists 214 suppliers of Potassium acetate in United States, India, China, Canada and 20 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Potassium acetate in India?

58 suppliers in India list Potassium acetate on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Potassium acetate?

Suppliers quote Potassium acetate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Potassium acetate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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