erbium(III) nitrate
{{Chembox
| ImageFile = Erbium nitrate.jpg
| ImageSize =
| ImageAlt =
| PIN =
| OtherNames = Erbium trinitrate, Erbium nitrate
|Section1={{Chembox Identifiers
| index1_label = hexahydrate
| index4_label =
| index5_label = pentahydrate
| CASNo = 10031-51-3
| CASNo1 = 13476-05-6
| CASNo5 =10031-51-3
| EC_number5=233-436-7
| ChemSpiderID =
| ChemSpiderID5 = 21241306
| DTXSID5 = DTXSID60692900
| DTXSID1 = DTXSID60158935
| UNII_Ref = {{fdacite|changed|FDA}}
| UNII =
| EINECS =
| PubChem5 = 53249207
| PubChem1 = 202892
| StdInChI =
| StdInChIKey =
| InChI5=1S/Er.3NO3.5H2O/c;3*2-1(3)4;;;;;/h;;;;5*1H2/q+3;3*-1;;;;;
| InChIKey5 = LWHHUEHWVBVASY-UHFFFAOYSA-N
| SMILES = [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Er+3]
| SMILES5 = [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.[Er+3]
| InChI1=1S/Er.3NO3.6H2O/c;3*2-1(3)4;;;;;;/h;;;;6*1H2/q+3;3*-1;;;;;;
| InChIKey1 = SXJVNCWLEGIRSJ-UHFFFAOYSA-N
| SMILES1 = [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Er+3]
}}
|Section2={{Chembox Properties
| Formula = Er(NO3)3
| MolarMass = 353.274
| Appearance = Pink crystals
| Density =
| MeltingPtC = 430
| BoilingPtC =
| Solubility = Soluble}}
|Section3={{Chembox Hazards
| MainHazards =
| GHSPictograms = {{GHS03}}{{GHS05}}{{GHS07}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|272|315|318|319|335}}
| PPhrases = {{P-phrases|210|220|221|261|264|271|280|302+352|304+340|305+351+338|310|312|321|332+313|337+313|362|370+378|403+233|405|501}}
| FlashPtC =
| AutoignitionPt = }}
|Section6={{Chembox Related
| OtherCompounds = Terbium(III) nitrate
}}
}}
Erbium(III) nitrate is an inorganic compound, a salt of erbium and nitric acid with the chemical formula Er(NO3)3.{{cite book |last1=Steglich |first1=Patrick |title=Electromagnetic Propagation and Waveguides in Photonics and Microwave Engineering |date=21 October 2020 |publisher=BoD – Books on Demand |isbn=978-1-83968-188-2 |page=42 |url=https://books.google.com/books?id=LGwtEAAAQBAJ&dq=Erbium(III)+nitrate&pg=PA42 |access-date=19 August 2021 |language=en}}{{cite book |last1=Милешко |first1=Леонид |last2=Гапоненко |first2=Николай |title=Основы процессов получения легированных оксидных пленок методами золь-гель технологии и анодного окисления |date=21 February 2020 |publisher=Litres |isbn=978-5-04-234580-7 |page=42 |url=https://books.google.com/books?id=x1vSDwAAQBAJ&dq=%D0%BD%D0%B8%D1%82%D1%80%D0%B0%D1%82+%D1%8D%D1%80%D0%B1%D0%B8%D0%B9&pg=PA42 |language=ru}}{{cite book |last1=Лидин |first1=Ростислав |last2=Молочко |first2=Вадим |last3=Андреева |first3=Лариса |title=Константы неорганических веществ. Справочник |date=2 February 2019 |publisher=Litres |isbn=978-5-04-077039-7 |page=37 |url=https://books.google.com/books?id=-cQ0DwAAQBAJ&dq=%D0%BD%D0%B8%D1%82%D1%80%D0%B0%D1%82+%D1%8D%D1%80%D0%B1%D0%B8%D0%B9&pg=PA37 |access-date=19 August 2021 |language=ru}} The compound forms pink crystals, readily soluble in water, also forms crystalline hydrates.{{cite book |title=Registry of Toxic Effects of Chemical Substances |date=1987 |publisher=National Institute for Occupational Safety and Health |page=2186 |url=https://books.google.com/books?id=gjbHG6ePMywC&dq=Erbium(III)+nitrate&pg=PA2186 |access-date=19 August 2021 |language=en}}{{cite book |last1=Macintyre |first1=Jane E. |title=Dictionary of Inorganic Compounds |date=23 July 1992 |publisher=CRC Press |isbn=978-0-412-30120-9 |page=3120 |url=https://books.google.com/books?id=9eJvoNCSCRMC&dq=Erbium(III)+nitrate&pg=PA3120 |access-date=19 August 2021 |language=en}}
Synthesis
Dissolving metallic erbium in nitric acid:
:{{chem2 | Er + 6 HNO3 -> Er(NO3)3 + 3 NO2 + 3 H2O ↑ }}
Dissolving erbium oxide or hydroxide in nitric acid:
:{{chem2 | Er(OH)3 + 3 HNO3 -> Er(NO3)3 + 3 H2O ↑ }}
Reaction of nitrogen dioxide with metallic erbium:
:{{chem2 | Er + 3 N2O4 -> Er(NO3)3 + 3 NO ↑ }}
Physical properties
Erbium(III) nitrate forms pink hygroscopic crystals.
Forms crystalline hydrates of the composition {{chem2 | Er(NO3)3*5H2O }}.
Both erbium(III) nitrate and its crystalline hydrate decompose on heating.
Dissolves in water and EtOH.{{cite book |last1=Sr |first1=Richard J. Lewis |title=Hazardous Chemicals Desk Reference |date=13 June 2008 |publisher=John Wiley & Sons |isbn=978-0-470-18024-2 |page=591 |url=https://books.google.com/books?id=WZeBDwAAQBAJ&dq=Erbium(III)+nitrate&pg=PA591 |access-date=19 August 2021 |language=en}}
Chemical properties
The hydrated erbium nitrate thermally decomposed to form ErONO3 and then to erbium oxide.
Applications
It is used to obtain metallic erbium and is also used as a chemical reagent.