potassium acetate

• ChemBase ID: 75186
• Molecular Formular: C2H3KO2
• Molecular Mass: 98.14232
• Monoisotopic Mass: 97.97701102
• SMILES: [O-]C(=O)C.[K+]
• Canonical SMILES: [O-]C(=O)C.[K+]
• InChI: InChI=1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
• InChIKey: SCVFZCLFOSHCOH-UHFFFAOYSA-M

NAMES AND DATABASE IDS

Names

• IUPAC name: potassium acetate
• IUPAC Traditional name: potassium acetate; potassium ion acetate ion
• Synonyms: Potassium salt; E261; Potassium acetate solution; Potassium acetate 99%; Acetic acid potassium salt; Potassium acetate hydrate, Puratronic®; Potassium acetate, ACS; Potassium acetate; POTASSIUM ACETATE; Diuretic Salt; Acetic Acid, potassium salt; POTASSIUM ACETATE ACS REAGENT GRADE; 乙酸钾 溶液; 乙酸钾水合物, Puratronic®; 乙酸钾,ACS; 乙酸钾

Database IDs

• CAS Number: 127-08-2; 254966-93-3
• EC Number: 204-822-2; 231-791-2
• MDL Number: MFCD00012458
• Beilstein Number: 3595449
• Merck Index: 147605
• PubChem SID: 24898694; 24881781; 24898163; 24854174; 24855480; 24859211; 24890205; 162040104; 24898173; 24898171; 24855062
• PubChem CID: 517044
• ATC CODE: B05XA17
• CHEMBL: 1201058
• Wikipedia Title: Potassium_acetate

CALCULATED PROPERTIES

• Acid pKa: 4.54344
• H Acceptors: 2
• H Donor: 0
• LogD (pH = 5.5): -1.2242727
• LogD (pH = 7.4): -2.9968748
• Log P: -0.22334571
• Molar Refractivity: 23.4808 cm^3
• Polarizability: 4.912116 Å^3
• Polar Surface Area: 40.13 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: 253 g/100 mL (20 °C) ; 492 g/100 mL (62 °C) in water; H2O: soluble1 M at 20 °C, clear, colorless; soluble in methanol, ethanol, liquid ammonia ; insoluble in ether, acetone; Soluble in water and alcohol
• Apperance: Crystalline; White deliquescent crystalline powder
• Melting Point: 292 °C; 292°C; 292°C; 303-307°C
• Density: 1.215 g/mL at 20 °C; 1.57; 1.57 g/cm^3; 1.57 g/cm3 at 25 °C(lit.); 1.8 g/cm^3 at 20 °C
• Refractive Index: n20/D 1.344; n20/D 1.370
• Vapor Pressure: Zero (does not form a vapor).
• Absorption Wavelength: λ: 260 nm Amax: ≤0.040; λ: 260 nm Amax: 0.01; λ: 260 nm Amax: 0.04; λ: 260 nm Amax: 0.08; λ: 260 nm Amax: 0.09; λ: 280 nm Amax: ≤0.020; λ: 280 nm Amax: 0.02; λ: 280 nm Amax: 0.06; λ: 282 nm Amax: 0.01
• pKa: 4.76
• pH: 5.0-7.0 (25 °C); 6.5-9.0 (25 °C, 5%); 7.0-9.0 (25 °C); 7.0-9.0 (25 °C, 1 M in H2O); 7.0-9.0 (25 °C, 50 mg/mL in H2O); 7.5-9 (20 °C, 5%); 7-9 (20 °C, 5%)

Safety Information

• Storage Condition: Room Temperature (15-30°C); Room Temperature (15-30°C), Desiccate
• Storage Warning: Hygroscopic; Irritant/Hygroscopic/Store under Argon
• RTECS: AJ3325000
• German water hazard class: 1
• TSCA Listed: 是
• NFPA704:
  

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• LD50: 3250 mg/kg (oral, rat)
• GHS Hazard statements: H303
• GHS Precautionary statements: P312
• Personal Protective Equipment: Eyeshields, Gloves; Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

Product Information

• Purity: ≥99%; ≥95.0%; ≥97.0%; ≥99%; ≥99% (perchloric acid titration); ≥99.0%; ≥99.0% (NT); 97%; 98%; 99%; 99% min; 99.98% trace metals basis; 99.997% (metals basis); 99-101%
• Concentration: ~1 M in H2O; 3 M in H2O (based on K+); 5 M in H2O; 5 M in H2O (based on acetate)
• Grade: ACS; ACS reagent; for luminescence; for molecular biology; JIS special grade; puriss.; puriss. p.a.; purum; purum p.a.; REAGENT; ReagentPlus®; SAJ first grade
• Suitability: complies for IR spectroscopy; in accordance for luminescence; meets USP testing specifications
• Impurities: ~100 ppm Rb; <50 ppm Cs; ≤0.0004% heavy metals (as Pb); ≤0.0005% heavy metals (as Pb); ≤0.0005% Phosphorus (P); ≤0.005% heavy metals (as Pb); ≤0.005% in water insoluble matters; ≤0.005% insolubles; ≤0.05% KMnO4 red. matter (as HCOOH); ≤0.1% Insoluble matter; DNases, none detected; insoluble matter, passes filter test; phosphatases, none detected; proteases, none detected; residual solvents, complies; RNases, none detected
• Cation Traces: Al: ≤0.0005%; Al: ≤1 mg/kg; Al: ≤5 mg/kg; As: ≤0.1 mg/kg; As: ≤2 mg/kg; Ba: ≤1 mg/kg; Ba: ≤5 mg/kg; Bi: ≤1 mg/kg; Bi: ≤2 mg/kg; Bi: ≤5 mg/kg; Ca: ≤0.001%; Ca: ≤0.005%; Ca: ≤100 mg/kg; Ca: ≤20 mg/kg; Ca: ≤5 mg/kg; Ca: ≤50 mg/kg; Cd: ≤1 mg/kg; Cd: ≤5 mg/kg; Cd: ≤50 mg/kg; Co: ≤1 mg/kg; Co: ≤5 mg/kg; Co: ≤50 mg/kg; Cr: ≤1 mg/kg; Cr: ≤5 mg/kg; Cu: ≤0.0005%; Cu: ≤1 mg/kg; Cu: ≤4 mg/kg; Cu: ≤5 mg/kg; Cu: ≤50 mg/kg; Fe: ≤0.0005%; Fe: ≤1 mg/kg; Fe: ≤10 mg/kg; Fe: ≤5 mg/kg; Fe: ≤5 ppm; Fe: ≤50 mg/kg; heavy metals (as Pb): ≤5 ppm; heavy metals: ≤5 ppm (as Pb); Li: ≤1 mg/kg; Li: ≤5 mg/kg; Mg: ≤0.0005%; Mg: ≤0.002%; Mg: ≤1 mg/kg; Mg: ≤10 mg/kg; Mg: ≤30 mg/kg; Mg: ≤5 mg/kg; Mn: ≤1 mg/kg; Mn: ≤5 mg/kg; Mo: ≤1 mg/kg; Mo: ≤5 mg/kg; Na: ≤0.03%; Na: ≤1000 mg/kg; Na: ≤2000 mg/kg; Na: ≤500 mg/kg; Na: ≤5000 mg/kg; NH4+: ≤0.05%; Ni: ≤1 mg/kg; Ni: ≤5 mg/kg; Ni: ≤50 mg/kg; Pb: ≤0.001%; Pb: ≤1 mg/kg; Pb: ≤4 mg/kg; Pb: ≤5 mg/kg; Pb: ≤50 mg/kg; Sr: ≤1 mg/kg; Sr: ≤5 mg/kg; Zn: ≤0.0005%; Zn: ≤1 mg/kg; Zn: ≤10 mg/kg; Zn: ≤5 mg/kg; Zn: ≤50 mg/kg
• Antion Traces: chloride (Cl-): ≤0.003%; chloride (Cl-): ≤20 mg/kg; chloride (Cl-): ≤50 mg/kg; phosphate (PO43-): ≤0.001%; phosphate (PO43-): ≤5 mg/kg; sulfate (SO42-): ≤0.002%; sulfate (SO42-): ≤100 mg/kg; sulfate (SO42-): ≤5 mg/kg; sulfate (SO42-): ≤50 mg/kg
• Foreign Activity: DNase (Exonuclease), NICKase (Endonuclease), RNase, protease, none detected
• Loss on Drying: ≤1% loss on drying, 150 °C, 2 h
• pH Range: 6.5 - 9.0 (25°C, 5% in solution)
• Quality: meets analytical specification of Ph. Eur., BP, E261
• λ: 1 M in H2O; neat
• Product Line: BioUltra
• Linear Formula: CH3COOK

DETAILS

MP Biomedicals - 02191425

ACS Reagent Grade Crystalline Insoluble Matter: =0.005%

MP Biomedicals - 02194843

Molecular Biology Reagent Purity: >99%

Sigma Aldrich - 255785

Packaging
25, 100 g in poly bottle
5 g in glass bottle

Sigma Aldrich - P1147

包装
1, 2.5 kg in poly bottle
500 g in poly bottle
法律信息
ReagentPlus 注册商标 Sigma-Aldrich Co. LLC

Sigma Aldrich - 236497

Packaging
100, 500 g in poly bottle
12 kg in poly drum
2.5, 4×2.5 kg in poly bottle

REFERENCES

• Has been found to give faster reaction than sodium acetate in the Perkin condensation of carboxylic acid anhydrides with aromatic aldehydes: Org. Synth. Coll., 3, 127, 426 (1955); review: Org. React., 1, 210 (1942).
• The nucleophilicity of acetate anion, e.g. in benzene or acetonitrile, is greatly increased in the presence of 18-crown-6: Tetrahedron Lett., 2417 (1974). In a comparative study of various anions in acetonitrile, 'naked' acetate, formed in this manner, was surprisingly found to be the most nucleophilic: Tetrahedron Lett., 4205 (1975).