查看“︁重铬酸铵”︁的源代码

{{NoteTA|G1=C}}
{{Chembox
|   Name = 重鉻酸銨
|   ImageFile = (NH4)2Cr2O7.JPG
|   ImageName = 
|   IUPACName = 
|  NameEn = Ammonium dichromate
|   OtherNames =  红矾铵 
| Section1 = {{Chembox Identifiers
| CASNo = 7789-09-5
| CASNo_Ref = {{cascite|correct|CAS}}
|    RTECS  =  HX7650000
  |  PubChem  =  24600
|  ChemSpiderID_Ref  = {{chemspidercite|correct|chemspider}}|  ChemSpiderID  =  23002
|  InChI  =  1/2Cr.2H3N.7O/h;;2*1H3;;;;;;;/q;;;;;;;;;2*-1/p+2/rCr2O7.2H3N/c3-1(4,5)9-2(6,7)8;;/h;2*1H3/q-2;;/p+2
|  SMILES  =  [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O.[NH4+].[NH4+]
|  InChIKey  =  JOSWYUNQBRPBDN-RFRSXZKWAS
|  StdInChI_Ref  = {{stdinchicite|correct|chemspider}}|  StdInChI  =  1S/2Cr.2H3N.7O/h;;2*1H3;;;;;;;/q;;;;;;;;;2*-1/p+2
|  StdInChIKey_Ref  = {{stdinchicite|correct|chemspider}}|  StdInChIKey  =  JOSWYUNQBRPBDN-UHFFFAOYSA-P
|  UNII_Ref  = {{fdacite|changed|FDA}}|  UNII  =  5J18BP595G
|  UNNumber  =  1439
  
}}
| Section2 = {{Chembox Properties
|   Formula = (NH<sub>4</sub>)<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>
|   MolarMass = 252.07
|   Appearance = 橘色晶體
|   Density = 2.15 
|   Solubility = 36.4 g/100 mL (20&nbsp;°C)
|   MeltingPt = 180&nbsp;°C 
|   BoilingPt = 分解
  }}
| Section3 = {{Chembox Structure
|   Coordination = 
|   CrystalStruct = 
  }}
| Section7 = {{Chembox Hazards
|   ExternalMSDS =
|   wxxfh={{wxxfh|E|T|N}}
|   MainHazards =吸入會使呼吸系統損傷
|   RPhrases = {{R45}}, {{R46}}, {{R60}}, {{R61}}, {{R2}}, {{R8}}, {{R21}}, {{R25}}, {{R26}}, {{R34}}, {{R42/43}}, {{R48/23}}, {{R50/53}}
|   SPhrases = {{S53}}, {{S45}}, {{S60}}, {{S61}}
|   NFPA-H = 3
|   NFPA-F = 1
|   NFPA-R = 1
|   NFPA-O = OX
|   Autoignition = 190&nbsp;°C
|   LD50 = 53.75 mg·kg<sup>−1</sup> (大鼠经口)<ref name="Merck-SDB">[http://chemdat.merck.de/documents/sds/emd/deu/de/1011/101149.pdf Sicherheitsdatenblatt (Merck)]</ref>
  }}
| Section8 = {{Chembox Related
|   OtherCations = [[重鉻酸鉀]]<br /> [[重鉻酸鈉]]
  }}
}}
'''重鉻酸銨'''{{NoteTag|-{zh-cn:{{標音|拼音=chóng gè suān ǎn}}; zh-hk:{{標音|拼音=chóng gè suān ǎn}}; zh-tw:{{標音|注音=ㄔㄨㄥˊ　ㄍㄜˋ　ㄙㄨㄢ　ㄢ}}}-}}是一種橘色的晶體，分子式為(NH<sub>4</sub>)<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>，可用于印染、[[茜素]]合成、[[明矾|铬明矾]]制造、[[石油]]精制，製造鞣革、香料、照像药品、烟火、陶瓷等<ref>{{Cite web |url=http://www.chem.com.cn/xxzx/dictionary/chem_dictionary.asp?cpdh=010300582 |title=http://www.chem.com.cn/xxzx/dictionary/c<br />hem_dictionary.asp?cpdh=010300582 |access-date=2008-03-10 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304114316/http://www.chem.com.cn/xxzx/dictionary/chem_dictionary.asp?cpdh=010300582 |dead-url=yes }}</ref>。

重铬酸铵加热至150&nbsp;°C可爆炸分解为[[三氧化二铬]]、[[氮]]气和[[水分子|水]]，该反应常被戏称为“火山爆发”，用于演示化学反应：
: <math>\rm (NH_4)_2Cr_2O_7 \ \overset{{\Delta}}{\longrightarrow} \ Cr_2O_3 + N_2\uparrow + 4H_2O</math>

== 安全 ==
重鉻酸銨具有很強的毒性以及是可疑的[[致癌]]物質，另外亦有強烈的[[刺激性]]。

==注釋==
{{NoteFoot}}

== 参考文献 ==
{{reflist}}
{{鉻酸鹽}}
{{铵盐}}
{{無機化合物小作品}}
[[Category:铵盐]]
[[Category:重铬酸盐]]
[[Category:光敏化学品]]
[[Category:氧化剂]]
[[Category:易制爆化学品]]