{{위키데이터 속성 추적}}
{{chembox
| Watchedfields = changed
| verifiedrevid = 444189976
| Name = 비산
| ImageFile = Arsenate.svg
| ImageSize = 150px
| ImageAlt = Structural formula
| ImageFile1 = Arsenic-acid-3D-balls.png
| ImageSize1 = 150px
| ImageAlt1 = Ball-and-stick model
| IUPACName = Arsenic acid, arsoric acid
| OtherNames = Arsenic acid<br />Orthoarsenic acid<br />Desiccant L-10<br />Zotox
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 229
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = N7CIZ75ZPN
| KEGG_Ref = {{keggcite|correct|kegg}}
| KEGG = C01478
| InChI = 1/AsH3O4/c2-1(3,4)5/h(H3,2,3,4,5)
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 18231
| ChEMBL = 2374288
| SMILES = O[As+](O)([O-])O
| InChIKey = DJHGAFSJWGLOIV-UHFFFAOYAY
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/AsH3O4/c2-1(3,4)5/h(H3,2,3,4,5)
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = DJHGAFSJWGLOIV-UHFFFAOYSA-N
| CASNo = 7778-39-4
| CASNo_Ref = {{cascite|correct|CAS}}
| RTECS = CG0700000
| EINECS = 231-901-9
| PubChem = 234
| UNNumber = 1553, 1554
  }}
|Section2={{Chembox Properties
| Formula = {{chem2|H3AsO4}}
| MolarMass = 141.94 g/mol
| Appearance = White translucent crystals,<br />[[hygroscopic]].
| Density = 2.5 g/cm<sup>3</sup>
| Solubility = 16.7 g/100 mL
| SolubleOther = soluble in [[ethanol|alcohol]]
| MeltingPtC = 35.5
| BoilingPtC = 120
| BoilingPt_notes = decomposes
| ConjugateBase = [[Arsenate]]
| pKa = 2.19, 6.94, 11.5
| VaporPressure = 55&nbsp;hPa (50&nbsp;°C)
  }}
|Section3={{Chembox Structure
| MolShape = Tetrahedral
| CrystalStruct = 
  }}
|Section7={{Chembox Hazards
| MainHazards = Extremely toxic, carcinogenic, corrosive
| ExternalSDS =
| FlashPt = Non-flammable
| GHSPictograms = {{GHS05}}{{GHS06}}{{GHS07}}{{GHS08}}{{GHS09}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|301|312|314|318|331|350|361|400|410}}
| PPhrases = {{P-phrases|201|202|260|261|264|270|271|273|280|281|301+310|301+330+331|302+352|303+361+353|304+340|305+351+338|308+313|310|311|312|321|322|330|363|391|403+233|405|501}}
| NFPA-H = 4
| NFPA-F = 0
| NFPA-R = 0
| LD50 = 48 mg/kg (rat, oral)
6 mg/kg (rabbit, oral)
  }}
|Section8={{Chembox Related
| OtherAnions = [[Phosphoric acid]]
| OtherCations = [[Sodium arsenate]]
| OtherCompounds = [[Arsenous acid]]<br />[[Arsenic pentoxide]]
  }}
}}

'''비산'''(Arsenic acid)은 [[화학식]] {{chem2|H3AsO4}}을 갖는 [[화합물]]이다. 더 기술적으로 쓰면 AsO(OH)<sub>3</sub>로 명기하며, 이 무색의 [[산 (화학)|산]] 물질은 [[인산]]과 비슷한 [[비소]]이다. [[비산염]]과 [[인산염]]은 매우 비슷한 행동을 보인다. 비산은 분리된 상태가 아닌, 이온화된 용액에서만 발견된다. 결정 샘플은 100°C에서 물방울과 함께 건조된다.<ref>{{서적 인용|author1=Holleman, A. F. |author2=Wiberg, E. | title = Inorganic Chemistry | publisher = Academic Press | location = San Diego | year = 2001 | isbn = 0-12-352651-5 }}</ref>

== 준비 ==
:As<sub>2</sub>O<sub>3</sub>  +  2 HNO<sub>3</sub>  +  2 H<sub>2</sub>O   →   2 H<sub>3</sub>AsO<sub>4</sub>  +  N<sub>2</sub>O<sub>3</sub>


=== 기타 방식 ===
:2&nbsp;As  +  3&nbsp;H<sub>2</sub>O  +  5&nbsp;O<sub>3</sub>   →   2&nbsp;H<sub>3</sub>AsO<sub>4</sub>  +  5&nbsp;O<sub>2</sub>


비산에 3 당량의 수산화 나트륨을 첨가하면, 비산나트륨(NaAsO4)를 형성한다.



H<sub>3</sub>AsO<sub>4</sub> + 3 NaOH ---> Na<sub>3</sub>AsO<sub>4</sub>

== 각주 ==
{{각주}}

{{수소 화합물}}
{{전거 통제}}

[[분류:산소산]]
[[분류:비소(V) 화합물]]