CAS 127-08-2PubChem CID 517044
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. — ChEBI
- IUPAC name
- potassium acetate
- Molecular formula
- C2H3KO2
- Molecular weight
- 98.14 g/mol
- Exact mass
- 97.97701082 Da
- Topological polar surface area
- 40.1 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 2
- Covalent units
- 2
- Defined stereocentres
- 0
Also known as
Diuretic saltACETIC ACID, POTASSIUM SALTPotassium ethanoateAcetic acid, potassium salt (1:1)FEMA No. 2920Octan draselnyKali aceticumPotassium acetates
16 more reported names
Potassium acetate in plastic containerINS NO.261E261INS-261INS-261(I)E-261CHEBI:32029Acetate, PotassiumRefChem:6149204-822-2686-264-3potassium;acetateKOAcC2H3KO2Acetic acid potassium saltAcOK
External database identifiers
- ChEBI:CHEBI:32029
- ChEMBL:CHEMBL1201058
- EPA DTXSID:DTXSID7027043
- PubMed:1329
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match517044
Attributed physical-property, hazard, environmental and use annotations.
- Density: 1.6 g/cm³ Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Density: 1.57 @25 °C Source: PAC Chemical Database, U.S. Department of Energy
- Melting Point: 292 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Melting Point: 309 °C Source: PAC Chemical Database, U.S. Department of Energy
- Physical Description: CBI; Large Crystals; Dry Powder; Liquid; Dry Powder; Large Crystals Source: EPA Chemical Data Reporting (CDR)
- Physical Description: Colourless, deliquescent crystals or a white crystalline powder, odourless or with a faint acetic odour Source: EU Food Improvement Agents
- Physical Description: Lustrous colorless or white solid; Rapidly deliquescent; [Merck Index] White crystalline solid; [Aldrich MSDS] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Physical Description: WHITE FLAKES OR CRYSTALLINE POWDER. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Solubility: Solubility in water, g/100ml at 20 °C: 256 Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- pH: 7,5-9,0 (5 % aqueous solution) Source: EU Food Improvement Agents
- Exposure Routes: The substance can be absorbed into the body by ingestion. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Note: This chemical does not meet GHS hazard criteria for 87.3% (418 of 479) of all reports. Source: European Chemicals Agency (ECHA)
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H315 (11.5%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (12.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (11.5%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 479 reports by companies from 11 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 418 of 479 reports by companies.; There are 9 notifications provided by 61 of 479 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. Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: Not Classified; Reported as not meeting GHS hazard criteria by 1 of 1 companies. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Cosmetic Ingredient Review Finding(s): Safe in the present practices of use and concentration. Ingredient, concentration, and use information are available in documents discoverable at https://cir-reports.cir-safety.org Source: Cosmetic Ingredient Review (CIR)
- Consumer Uses: Anti-scaling agent; Not Known or Reasonably Ascertainable; Soil amendments (fertilizers); Preservative; Flame retardant; Lubricating agent; Other; Anti-freeze agent Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Chemical reaction regulator; pH regulating agent; Other; Lubricating agent; Anti-freeze agent; Defoamer; Laboratory chemicals; Intermediate; Preservative; Soil amendments (fertilizers); Catalyst; Corrosion inhibitor; Not Known or Reasonably Ascertainable; Flame retardant Source: EPA Chemical Data Reporting (CDR)
- Cosmetic Ingredient Review Link: CIR ingredient: Potassium Acetate Source: Cosmetic Ingredient Review (CIR)
- Sources/Uses: Used as a potassium supplement; [Merck Index] Used in the chemical industry (synthesis), textile processing industry, anti-freeze agents, foods (permitted additive in the UK), and pharmaceuticals; Also used as a pH regulator and industrial de-icer; [IUCLID] Used in foods as a buffer and antimicrobial preservative; [JECFA] Used as a dehydrating agent and in crystal glass; [Hawley] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Industrial Processes with risk of exposure: Textiles (Fiber & Fabric Manufacturing) [Category: Industry]; Glass Manufacturing [Category: Industry] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.