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Kaliumacetat
KOAc · AcOK · Kac · Potassium acetate solution · ACETIC ACID, POTASSIUM SALT · pharm · Acetic acid, potassium salt, 99+% · Disal
Identifikatoren & physikalische Daten
| CAS No. | 127-08-2 |
|---|---|
| Summenformel | C2H3KO2 |
| Durchschnittliche Molmasse | 98,14 g/mol |
| Monoisotopische Masse | 97,97701082 g/mol |
| SMILES | CC(=O)[O-].[K+] |
| InChIKey | SCVFZCLFOSHCOH-UHFFFAOYSA-M |
| PubChem CID | 517044 |
| ChEMBL | CHEMBL1201058 |
| ChEBI | CHEBI:32029 |
| EC No. | 204-822-2 |
| DTXSID | DTXSID7027043 |
| Lokaler Name | Kaliumacetat |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 40,1 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 2 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 5 |
| Formalladung | 0 |
| Komplexität | 34 |
| pH | 7,5-9,0 (5 % aqueous solution)7.87(1 mM solution)8.33(10 mM solution)8.75(100 mM solution)9.06(1000 mM solution) |
| Dichte | 1.6 g/cm³1.57 @25 °C1.57 g/cm3 at 25 °C (lit.) |
| Löslichkeit | Solubility in water, g/100ml at 20 °C: 25665% soluble in water, 35% soluble in alcohol, insoluble in most oils2694 g/L (25 ºC) |
| Schmelzpunkt | 292 °C309 °C |
| Physical Description | CBILarge CrystalsDry PowderLiquidColourless, deliquescent crystals or a white crystalline powder, odourless or with a faint acetic odourLustrous colorless or white solidRapidly deliquescent[Merck Index] White crystalline solid[Aldrich MSDS]WHITE FLAKES OR CRYSTALLINE POWDER. |
| Dampfdruck | <0.0000001 hPa ( 25 °C) |
| FEMA | 2920 | POTASSIUM ACETATE |
| Brechungsindex | n20/D 1.370 |
| Flammpunkt | >250℃ |
| Lagerbedingungen | room temp |
| pKa (Säurekonstante) | 4.756[at 20 ℃] |
| Aggregatzustand | Solid |
| Farbe | White to light brown |
| Wichte | 1.57 |
| Geruch | Odorless |
| Biologische Quelle | synthetic |
| Merck | 14,7605 |
| BRN | 3595449 |
| Stabilität | Deliquescent. Stable. Incompatible with strong oxidizing agents. |
| Kosmetik-Inhaltsstoffe Funktionen | FILM FORMING |
| InChI | 1S/C2H4O2.K/c1-2(3)4/h1H3,(H,3,4)/q+1/p-1 |
| InChIKey | SCVFZCLFOSHCOH-UHFFFAOYSA-M |
| SMILES | [K+].CC([O-])=O |
| LogP (Verteilungskoeffizient) | -3.72 |
| CAS Datenbank | 127-08-2(CAS DataBase Reference) |
| NIST chemische Informationen | Potassium acetate(127-08-2) |
| EPA chemische Informationen | Potassium acetate (127-08-2) |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 87.3% (418 of 479) of all reports.WarningH315 (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 exposureRespiratory tract irritation]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)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. |
|---|---|
| Regulatorische Informationen | Chemical: Acetic acid, potassium saltAcetic acid, potassium salt (1:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Acetic 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)Status: Active Update: 21-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15104Potassium acetate: Non hazardous |
| Weitere Sicherheitsinformationen | IMAP assessments - Acetic acid, potassium salt: Human health tier I assessment |
| Brandgefahren | Combustible. |
| Gefahrenübersicht | A mild skin and eye irritant[ICSC] Not irritating to eyes of rabbits[IUCLID] Allowable daily intake (ADI) of not limited [JECFA] May cause irritation[Aldrich MSDS] |
| EPA Safer Chemical | Chemical: Potassium acetateGreen circle - The chemical has been verified to be of low concern based on experimental and modeled data. |
| Chemical Dangers | Decomposes on heating and on contact with strong acids. This produces acetic acid fumes. Reacts violently with strong oxidants. The solution in water is a weak base. |
| Hazard Classes and Categories | Skin Irrit. 2 (11.5%)Eye Irrit. 2 (12.7%)STOT SE 3 (11.5%)Not Classified |
| Brandbekämpfung | Use water spray, foam, powder, carbon dioxide. |
| Erste-Hilfe-Maßnahmen | Fresh air, rest.Rinse and then wash skin with water and soap.First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. |
| Sichere Lagerung | Separated from strong acids and strong oxidants. |
| Verschüttetes entsorgen | Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. |
| Eye Prevention | Wear safety goggles. |
| Fire Prevention | NO open flames. |
| Inhalation Risk | No indication can be given about the rate at which a harmful concentration of this substance in the air is reached. |
| Skin Prevention | Protective gloves. |
| Ingestion Prevention | Do not eat, drink, or smoke during work. |
| Inhalation Prevention | Use local exhaust. |
| Effects of Short Term Exposure | The substance is mildly irritating to the eyes and skin. |
| Protective Action Criteria (PAC) | 9.8 [mg/m3]110 [mg/m3]640 [mg/m3] |
| Expositionspfade | The substance can be absorbed into the body by ingestion. |
| Toxizitätsübersicht | 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 |
| Signs and Symptoms | Redness. |
| Wassergefährdungsklasse (WGK) | 1 |
| TSCA-Inventar-Status | TSCA listed |
| Zollcode | 29159000 |
| RTECS-Nr. | AJ3325000 |
| Toxizität | LD50 orally in rats: 3.25 g/kg, H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969) |
| hazard_note | Hygroscopic |
| Sicherheitshinweise (S) | 26-24/25 |
| Lagerklasse | 13 - Non Combustible Solids |
Anwendungen & Verwendung
Beschreibung
Potassium acetate (CH3CO2K) is the potassium salt of acetic acid.
Verwenden
1) Potassium acetate, crystalline powder, USP is, as its name suggests, the potassium salt of acetic acid and is used as a catalyst for producing polyurethanes2) In the food industry it is used as a food additive, an acidity regulator and a preservative
Herstellung & Synthese
synthetische
Potassium acetate is prepared by addition of potassium carbonate in a small volume of water to acetic acid solution, followed by evaporation and crystallization: K2CO3+ 2CH3COOH →2CH3COOK + H2O