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CAS No.: | 127-08-2 |
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Name: | Potassium acetate |
Article Data: | 89 |
Molecular Structure: | |
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Formula: | C2H3KO2 |
Molecular Weight: | 98.1429 |
Synonyms: | Polycat 46;Acetic acid,compounds,potassium salt;Catacyst LB;Kaliumazetat;Potassium Acetate, Granular, U.S.P.;Acetic acid, potassium salt; |
EINECS: | 204-822-2 |
Density: | 1.57 g/cm3 |
Melting Point: | 292 °C |
Boiling Point: | 117.1oC at 760 mmHg |
Flash Point: | 40oC |
Solubility: | 2694 g/L (25°C) in water |
Appearance: | colourless crystals or white powder |
Hazard Symbols: |
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Risk Codes: | 36/37/38-25-23/24/25-21 |
Safety: | 26-36-24/25-45-36/37/39 |
PSA: | 40.13000 |
LogP: | -1.24380 |
Conditions | Yield |
---|---|
In diethyl ether; N,N-dimethyl acetamide; ethyl acetate (Ar); vapor diffusion of Et2O into a (CH3)2NCOCH3/EtOAc soln. of Co complex; | 100% |
In N,N-dimethyl acetamide; ethyl acetate (Ar); stirred for 2 h at room temp.; |
N,N-dimethyl acetamide
bis[(N'-isopropylureido)-N-ethyl]-N-methylamine
water
nickel diacetate
K[Ni(bis[(N'-isopropylureido)-N-ethyl]-N-methylamine(-2H))(hydroxo)]*DMA
B
potassium acetate
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide (Ar); treatment of soln. of urea deriv. in dimethylacetamide with 2 equiv. of KH at room temp., addn. of 1 equiv. of nickel compd. at room temp., filtration, addn. of 1 equiv. of KH, addn. of 1 equiv. of water; evapn., triturating with ether, isolation of ppt., IR and UV; | A n/a B 99% |
In N,N-dimethyl acetamide (Ar); treatment of soln. of urea deriv. in dimethylacetamide with 3 equiv. of KH at room temp., addn. of 1 equiv. of nickel compd. at room temp., stirring for 45 min, addn. of 1 equiv. of water, stirring for 20 min; filtration, diffusion of 1:1 ether/pentane vapour, isolation of crystals, elem. anal.; | A 64% B 98% |
N,N-dimethyl acetamide
3-(bis[(N'-tert-butylureaylato)-N-ethyl]aminatomethyl)-5-tert-butyl-1H-pyrazole
water
B
potassium acetate
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide (Ar); a soln. of ligand treated with KH, Co salt added, stirred for 30 min, filtered, H2O added, stirred for 30 min; evapd. (vac., at room temp.), washed (Et2O), dried (vac.); elem. anal.; | A 83% B 98% |
K[Ni(bis[(N'-isopropylureido)-N-ethyl]-N-methylamine(-2H))(hydroxo)]*DMA
tetramethyl ammonium acetate
potassium hexamethylsilazane
C
potassium acetate
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide (Ar); treatment of soln. of nickel compd. in dimethylacetamide with 1 equiv. of potassium amide deriv. at room temp., stirring for 30 min, addn.of tetramethylammonium salt at room temp., stirring for 1 h; filtration, evapn., triturating with diethyl ether, isolation of ppt., recrystn. by diffusion of 1:1 diethyl ether/pentane vapour into soln. in dimethylacetamide, elem. anal.; | A 0% B 94% C 98% |
K[Ni(bis[(N'-tert-butylureido)-N-ethyl]-N-methylamine(-2H))(hydroxo)]*DMA
potassium tert-butylate
tetramethyl ammonium acetate
B
[tetramethylammonium][Ni(bis[(N'-tert-butylureido)-N-ethyl]-N-methylamine(-2H))(tert-butoxide)]
C
potassium acetate
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide (Ar); treatment of soln. of nickel compd. in dimethylacetamide with 1 equiv. of potassium tert-butoxide at room temp., stirring for 30 min, addn. of tetramethylammonium salt at room temp., stirring for 1 h; filtration, evapn., triturating with diethyl ether, isolation of ppt., recrystn. by diffusion of diethyl ether vapour into soln. in dimethylacetamide, IR and UV; | A 0% B 78% C 96% |
K[Ni(bis[(N'-tert-butylureido)-N-ethyl]-N-methylamine(-2H))(hydroxo)]*DMA
tetramethyl ammonium acetate
potassium hexamethylsilazane
B
[tetramethylammonium][Ni(bis[(N'-tert-butylureido)-N-ethyl]-N-methylamine(-2H))(OSiMe3)]
C
potassium acetate
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide (Ar); treatment of soln. of nickel compd. in dimethylacetamide with 1 equiv. of potassium amide deriv. at room temp., stirring for 30 min, addn.of tetramethylammonium salt at room temp., stirring for 1 h; filtration, evapn., triturating with diethyl ether, isolation of ppt., recrystn. by diffusion of 1:1 diethyl ether/pentane vapour into soln. in dimethylacetamide, IR and UV; | A 0% B 95% C n/a |
bis[(N'-isopropylureido)-N-ethyl]-N-methylamine
potassium tert-butylate
tetramethyl ammonium acetate
nickel diacetate
[tetramethylammonium][Ni(bis[(N'-isopropylureido)-N-ethyl]-N-methylamine(-2H))(tert-butoxide)]
B
potassium acetate
Conditions | Yield |
---|---|
With KH In N,N-dimethyl acetamide (vac. or Ar); treatment of soln. of urea deriv. in dimethylacetamide with KH, addn. of nickel compd., stirring for 45 min, addn. of potassium tert-butoxide, addn. of tetramethylammonium salt, stirring for 1 h; evapn. triturating with diethyl ether, isolation of ppt., elem. anal.; | A 91% B 89% |
K[Ni(bis[(N'-isopropylureido)-N-ethyl]-N-methylamine(-2H))(hydroxo)]*DMA
potassium tert-butylate
tetramethyl ammonium acetate
[tetramethylammonium][Ni(bis[(N'-isopropylureido)-N-ethyl]-N-methylamine(-2H))(tert-butoxide)]
C
potassium acetate
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide (Ar); treatment of soln. of nickel compd. in dimethylacetamide with 1 equiv. of potassium tert-butoxide at room temp., stirring for 30 min, addn. of tetramethylammonium salt at room temp., stirring for 1 h; filtration, evapn., triturating with diethyl ether, isolation of ppt., recrystn. by diffusion of 1:1 ether/pentane vapour into soln. in dimethylacetamide, IR and UV; | A 0% B 91% C 89% |
N,N-dimethyl acetamide
water
nickel diacetate
bis[(N'-tert-butylureido)-N-ethyl]-N-methylamine
K[Ni(bis[(N'-tert-butylureido)-N-ethyl]-N-methylamine(-2H))(hydroxo)]*DMA
B
potassium acetate
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide (Ar); treatment of soln. of urea deriv. in dimethylacetamide with 3 equiv. of KH at room temp., addn. of 1 equiv. of nickel compd. at room temp., stirring for 45 min, addn. of 1 equiv. of water, stirring for 20 min; filtration, diffusion of 1:1 ether/pentane vapour, isolation of crystals, elem. anal.; | A 87% B 84% |
Conditions | Yield |
---|---|
With water In melt byproducts: H2; 300°C, mixing, leading H2O vapor into the melt; | 83% |
With H2O In melt byproducts: H2; 300°C, mixing, leading H2O vapor into the melt; | 83% |
With air In water handling with air in presence of dild. aq. KOH in diffuse daylight at ambient temp.; | |
With air In water handling with air in presence of dild. aq. KOH in diffuse daylight at ambient temp.; |
Molecular Structure of Potassium Acetate (CAS NO.127-08-2):
IUPAC Name: potassium acetate
Empirical Formula: C2H3KO2
Molecular Weight: 98.1423
H bond acceptors: 2
H bond donors: 1
Freely Rotating Bonds: 0
Polar Surface Area: 37.3Å2
Flash Point: 40 °C
Enthalpy of Vaporization: 23.7 kJ/mol
Density: 1.57 g/cm3 at 25 °C(lit.)
Boiling Point: 117.1 °C at 760 mmHg
Vapour Pressure: 13.9 mmHg at 25°C
CAS Registry Number: 127-08-2
EINECS: 204-822-2
FEMA: 2920
Storage temp: Store at RT.
Melting point: 292°C
Water solubility: 2694 g/L (25°C)
Sensitive: Hygroscopic
Merck: 14,7605
BRN: 3595449
InChI
InChI=1/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
Smiles
C(C)(=O)[O-].[K+]
Stability: Stability Deliquescent. Stable. Incompatible with strong oxidizing agents.
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Potassium Acetate (CAS NO.127-08-2) can be used as a deicer instead of chloride salts like calcium chloride or magnesium chloride. Potassium acetate offers the advantage of being less aggressive on soils and much less corrosive, and for this reason is preferred for airport runways. It is, however, more expensive. Potassium acetate is used as part of replacement protocols in the treatment of diabetic ketoacidosis because of its ability to break down into bicarbonate and help neutralize the acidotic state. It is the extinguishing agent used in class K fire extinguishers because of its ability to cool and form a crust over the burning oils. Besides used as a food additive (preservative, acidity regulator) found on food labels in the European Union.
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
rat | LD50 | oral | 3250mg/kg (3250mg/kg) | American Industrial Hygiene Association Journal. Vol. 30, Pg. 470, 1969. |
Reported in EPA TSCA Inventory.
Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of K2O.
Hazard Codes of Potassium Acetate (CAS NO.127-08-2): Xi,
T
Risk Statements: 36/37/38-25-23/24/25-21
R36/37/38:Irritating to eyes, respiratory system and skin.
R25 :Toxic if swallowed.
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed.
R21:Harmful in contact with skin.
Safety Statements: 26-36-24/25-45-36/37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
S24/25:Avoid contact with skin and eyes.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
WGK Germany: 1
RTECS: AJ3325000
Hazard Note: Hygroscopic
TSCA: Yes
Potassium Acetate , with CAS number of 127-08-2, can be called Polycat 46 ; Acetic acid,compounds,potassium salt ; Catacyst LB ; Kaliumazetat ; Potassium acetate (TN) ; Potassium Acetate, Granular, U.S.P ; Potassium acetate ; Acetic acid, potassium salt . It is a colourless crystals or white powder.