{{위키데이터 속성 추적}}
{{chembox
| Verifiedfields = changed
| Watchedfields  = changed
| verifiedrevid  = 404348953
| Name           = 아세트산 칼륨
| ImageFile      = Potassium_acetate skeletal.png
| ImageFileL1    = Acetate-anion-3D-balls.png
| ImageFileR1    = Potassium-3D.png
| ImageSize      = 120px
| ImageName      = Skeletal formula of potassium acetate
| PIN            = potassium acetate
| OtherNames     = potassium ethanoate, E261
| Section1       = {{Chembox Identifiers
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo = 127-08-2
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = M911911U02
| ChEMBL_Ref = {{ebicite|changed|EBI}}
| ChEMBL = 1201058
| PubChem = 31371
| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
| ChemSpiderID = 29104
| SMILES = CC(=O)[O-].[K+]
| InChI = 1/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
| InChIKey = SCVFZCLFOSHCOH-REWHXWOFAA
| StdInChI_Ref = {{stdinchicite|changed|chemspider}}
| StdInChI = 1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}
| StdInChIKey = SCVFZCLFOSHCOH-UHFFFAOYSA-M
  }}
| Section2       = {{Chembox Properties
| C=2 | H=3 | O=2 | K=1
| Appearance = 흰색 [[조해성]] 결정성 분말
| Density = 1.8{{nbsp}}g/cm<sup>3</sup> (20{{nbsp}}°C)<ref name=chemister /><br /> 1.57{{nbsp}}g/cm<sup>3</sup> (25{{nbsp}}°C)
| Solubility = 216.7{{nbsp}}g/100{{nbsp}}mL (0.1{{nbsp}}°C)<br /> 233.8{{nbsp}}g/100{{nbsp}}mL (10{{nbsp}}°C)<br /> 268.6{{nbsp}}g/100{{nbsp}}mL (25{{nbsp}}°C)<br /> 320.8{{nbsp}}g/100{{nbsp}}mL (40{{nbsp}}°C)<br /> 390.7{{nbsp}}g/100{{nbsp}}mL (96{{nbsp}}°C)<ref name=sioc>{{서적 인용|last1 = Seidell|first1 = Atherton|last2 = Linke|first2 = William F.|year = 1952|title = Solubilities of Inorganic and Organic Compounds|publisher = Van Nostrand}}</ref>
| SolubleOther = Soluble in [[ethanol|alcohol]], liquid [[ammonia]]<br /> Insoluble in [[diethyl ether|ether]], [[acetone]]
| Solubility1 = 24.24{{nbsp}}g/100{{nbsp}}g (15{{nbsp}}°C)<br /> 53.54{{nbsp}}g/100{{nbsp}}g (73.4{{nbsp}}°C)<ref name=chemister />
| Solvent1 = methanol
| Solubility2 = 16.3{{nbsp}}g/100{{nbsp}}g<ref name=chemister/>
| Solvent2 = ethanol
| Solubility3 = 0.06{{nbsp}}g/kg (0{{nbsp}}°C)<ref name=chemister/>
| Solvent3 = sulfur dioxide
| MeltingPtC = 292
| BoilingPt = Decomposes
| pKa = 4.76
  }}
| Section3       = {{Chembox Structure
| CrystalStruct = Monoclinic
  }}
| Section4       = 
| Section5       = {{Chembox Thermochemistry
| DeltaHf = −722.6{{nbsp}}kJ/mol<ref name=chemister>{{웹 인용|url=http://chemister.ru/Database/properties-en.php?dbid=1&id=504|title=Potassium acetate}}</ref>
| HeatCapacity = 109.38{{nbsp}}J/mol·K<ref name=nist>{{nist|name=Acetic acid, potassium salt|id=C127082|accessdate=2014-05-18|mask=FFFF|units=SI}}</ref>
| DeltaGf = 
| Entropy = 150.82{{nbsp}}J/mol·K<ref name=nist />
}}
| Section6       = {{Chembox Pharmacology
| ATCCode_prefix = B05
| ATCCode_suffix = XA17
}}
| Section7       = {{Chembox Hazards
| NFPA-H = 1
| NFPA-F = 1
| NFPA-R = 0
| LD50 = 3250{{nbsp}}mg/kg (oral, rat)<ref>http://chem.sis.nlm.nih.gov/chemidplus/rn/127-08-2 {{깨진 링크|date=March 2022}}</ref>
  }}
}}
'''아세트산 칼륨'''({{llang|en|potassium acetate}}), '''에탄산 칼륨'''({{llang|en|potassium ethanoate}}) 또는 '''초산 칼륨'''(CH<sub>3</sub>COOK)은 [[아세트산]]의 [[칼륨]][[염]]이다. 실온에서 [[흡습성]] 고체이다.

== 제조 ==
[[수산화 칼륨]]이나 [[탄산 칼륨]]과 같은 칼륨 함유 염기를 아세트산으로 처리하여 제조할 수 있다.

:CH<sub>3</sub>COOH + KOH → CH<sub>3</sub>COOK + H<sub>2</sub>O
이러한 종류의 반응을 산-염기 중화 반응이라고 한다.

수용액(CH3COOK·1½H2O)의 세스키수화물은 41.3&nbsp;°C에서 반수화물을 형성하기 시작한다.

== 같이 보기 ==
* [[아세트산]]
* [[칼륨]]

{{칼륨 화합물}}
{{전거 통제}}

[[분류:아세테이트]]
[[분류:칼륨 화합물]]
[[분류:E 번호 첨가제]]