Lanthanum hydroxide

Lanthanum(III) hydroxide
Names
__ La³⁺ __ OH⁻
IUPAC name Lanthanum(III) hydroxide
Identifiers
CAS Number	14507-19-8^Y
3D model (JSmol)	Interactive image
ChemSpider	119053
ECHA InfoCard	100.034.994
EC Number	238-510-2
PubChem CID	135111
UNII	7PTY21U5YN^Y
CompTox Dashboard (EPA)	DTXSID5065778
InChI InChI=1S/La.3H2O/h;3*1H2 Key: YXEUGTSPQFTXTR-UHFFFAOYSA-K
SMILES [OH-].[OH-].[OH-].[La+3]
Properties
Chemical formula	La(OH)₃
Molar mass	189.93 g/mol
Solubility in water	K_sp= 2.00·10⁻²¹
Structure
Crystal structure	hexagonal
Space group	P6₃/m, No. 176
Lattice constant	a = 6.547 Å, c = 3.854 Å
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Irritant
GHS labelling:^[1]
Pictograms
Signal word	Danger
Hazard statements	H314
Precautionary statements	P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
NFPA 704 (fire diamond)	1 W
Flash point	Non-flammable
Related compounds
Other anions	Lanthanum(III) chloride
Other cations	Cerium(III) hydroxide Actinium(III) hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N (what is ^YN ?) Infobox references

Lanthanum hydroxide is La(OH)
₃, a hydroxide of the rare-earth element lanthanum.

Synthesis

Lanthanum hydroxide can be obtained by adding an alkali such as ammonia to aqueous solutions of lanthanum salts such as lanthanum nitrate. This produces a gel-like precipitate that can then be dried in air.^[2]

La(NO₃)₃ + 3 NH₄OH → La(OH)₃ + 3 NH₄NO₃

Alternatively, it can be produced by hydration reaction (addition of water) to lanthanum oxide.^[3]

La₂O₃ + 3 H₂O → 2 La(OH)₃

Characteristics

Lanthanum hydroxide does not react much with alkaline substances, however is slightly soluble in acidic solution.^[2] In temperatures above 330 °C it decomposes into lanthanum oxide hydroxide (LaOOH), which upon further heating decomposes into lanthanum oxide (La₂O₃):^[4]

La(OH)₃

\mathrm {{\xrightarrow[{-H_{2}O}]{330\ ^{o}C}}\ }

LaOOH

2 LaOOH

\mathrm {{\xrightarrow[{-H_{2}O}]{\Delta }}\ }

La₂O₃

Lanthanum hydroxide crystallizes in the hexagonal crystal system. Each lanthanum ion in the crystal structure is surrounded by nine hydroxide ions in a tricapped trigonal prism.^[5]

References

^ "C&L Inventory". echa.europa.eu.
^ ^a ^b E.V. Shkolnikov (2009). "Thermodynamic Characterization of the Amphoterism of Hydroxides and Oxides of Scandium Subgroup Elements in Aqueous Media". Russian Journal of Applied Chemistry. 82 (2): 2098–2104. doi:10.1134/S1070427209120040. S2CID 93220420.
^ Ding, Jiawen; Wu, Yanli; Sun, Weili; Li, Yongxiu (2006). "Preparation of La(OH)3 and La2O3 with Rod Morphology by Simple Hydration of La2O3". Journal of Rare Earths. 24 (4): 440–442. doi:10.1016/S1002-0721(06)60139-7.
^ Michael E. Brown, Patrick Kent Gallagher (2008). Handbook of Thermal Analysis and Calorimetry. Elsevier. p. 482. ISBN 978-0-44453123-0.
^ Beall, G.W.; Milligan, W.O.; Wolcott, Herbert A. (1977). "Structural trends in the lanthanide trihydroxides". Journal of Inorganic and Nuclear Chemistry. 39 (1): 65–70. doi:10.1016/0022-1902(77)80434-X.

External links

Lanthanum compounds

This inorganic compound–related article is a stub. You can help Wikipedia by expanding it.

Read other articles:

As Tears Go By (film)

As Tears Go ByNama lainTradisional旺角卡門Sederhana旺角卡门MandarinWàngjiǎo KǎménKantonWong6gok3 Kaa1mun4ArtiMong Kok Carmen SutradaraWong Kar-waiProduserAlan TangDitulis olehJeffrey LauWong Kar-waiPemeranAndy LauMaggie CheungJacky CheungPenata musikDanny ChungTeddy RobinSinematograferAndrew LauPenyuntingCheung Pei-takWilliam Chang (tak disebutkan)PerusahaanproduksiIn-Gear FilmsDistributorKino InternationalTanggal rilis 9 Juni 1988 (1988-06-09) Durasi102 menitNega...

Dedek Prayudi

Artikel ini membutuhkan rujukan tambahan agar kualitasnya dapat dipastikan. Mohon bantu kami mengembangkan artikel ini dengan cara menambahkan rujukan ke sumber tepercaya. Pernyataan tak bersumber bisa saja dipertentangkan dan dihapus.Cari sumber: Dedek Prayudi – berita · surat kabar · buku · cendekiawan · JSTOR Dedek Prayudi, B.A, M.Sc (lahir 23 April 1984) adalah seorang peneliti dan politikus Indonesia. Saat ini ia menjabat sebagai Ketua DPP Partai ...

Brahmavihara

artikel ini perlu dirapikan agar memenuhi standar Wikipedia. Tidak ada alasan yang diberikan. Silakan kembangkan artikel ini semampu Anda. Merapikan artikel dapat dilakukan dengan wikifikasi atau membagi artikel ke paragraf-paragraf. Jika sudah dirapikan, silakan hapus templat ini. (Pelajari cara dan kapan saatnya untuk menghapus pesan templat ini) Artikel ini tidak memiliki referensi atau sumber tepercaya sehingga isinya tidak bisa dipastikan. Tolong bantu perbaiki artikel ini dengan menamba...

Синелобый амазон

Синелобый амазон Научная классификация Домен:ЭукариотыЦарство:ЖивотныеПодцарство:ЭуметазоиБез ранга:Двусторонне-симметричныеБез ранга:ВторичноротыеТип:ХордовыеПодтип:ПозвоночныеИнфратип:ЧелюстноротыеНадкласс:ЧетвероногиеКлада:АмниотыКлада:ЗавропсидыКласс:Пт�...

Jay Anson

Den här artikeln omfattas av Wikipedias policy om biografier. Den behöver fler källhänvisningar för att kunna verifieras. (2023-03) Åtgärda genom att lägga till pålitliga källor (gärna som fotnoter). Uppgifter utan källhänvisning kan ifrågasättas och tas bort utan att det behöver diskuteras på diskussionssidan. Jay AnsonFödd4 november 1921[1][2][3]New York, USADöd12 mars 1980[1][2][3] (58 år)Palo Alto, USAMedborgare iUSASysselsättningFörfattare, manusför...

Anyon

Type of two-dimensional quasiparticle Statistical mechanics Thermodynamics Kinetic theory Particle statistics Spin–statistics theorem Indistinguishable particles Maxwell–Boltzmann Bose–Einstein Fermi–Dirac Parastatistics Anyonic statistics Braid statistics Thermodynamic ensembles NVE Microcanonical NVT Canonical µVT Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free energy Gibbs fr...

SubZero (webcomic)

Romance webcomic SubZeroSubZero banner artAuthor(s)JunepurrrWebsitehttps://www.webtoons.com/en/romance/subzero/list?title_no=1468Current status/scheduleUpdates weeklyLaunch dateOctober 21st, 2018Publisher(s)WebtoonGenre(s)RomanceRating(s)9.80 stars on Webtoon as of July 2021 SubZero is a fantasy romance webcomic created by artist Junepurrr. It follows the marriage between a princess and prince from rival clans arranged in order to end a war. It began publishing weekly on the Webtoon platform ...

美国众议院

此條目需要补充更多来源。 (2021年7月4日)请协助補充多方面可靠来源以改善这篇条目，无法查证的内容可能會因為异议提出而被移除。致使用者：请搜索一下条目的标题（来源搜索：美国众议院 — 网页、新闻、书籍、学术、图像），以检查网络上是否存在该主题的更多可靠来源（判定指引）。美國眾議院 United States House of Representatives第118届美国国会众议院徽章众议院旗...

Berunanpukuria

Village in West Bengal, IndiaBerunanpukuriaVillageBerunanpukuriaLocation in West Bengal, IndiaShow map of West BengalBerunanpukuriaBerunanpukuria (India)Show map of IndiaCoordinates: 22°43′41″N 88°27′13″E / 22.7281759°N 88.4535027°E / 22.7281759; 88.4535027Country IndiaStateWest BengalDistrictNorth 24 ParganasRegionGreater KolkataPopulation (2011) • Total2,188Languages • OfficialBengali, EnglishTime zoneUTC+5:30 (IST)PIN70...

哈萨克斯坦总统

此条目序言章节没有充分总结全文内容要点。 (2019年3月21日)请考虑扩充序言，清晰概述条目所有重點。请在条目的讨论页讨论此问题。哈萨克斯坦總統哈薩克總統旗現任Қасым-Жомарт Кемелұлы Тоқаев卡瑟姆若马尔特·托卡耶夫自2019年3月20日在任任期7年首任努尔苏丹·纳扎尔巴耶夫设立1990年4月24日（哈薩克蘇維埃社會主義共和國總統）哈萨克斯坦哈萨克斯坦政府...

Burton ale

Dark and sweet type of strong ale Burton ale is a type of strong ale which is dark and sweet.[1][2] It is named after the brewing town of Burton-on-Trent.[3][4][5] Burton ales were generally aged and needed cellaring for months before serving, and almost certainly had some degree of secondary fermentation going on during that time.[6] In London, the terms Burton ale and old ale were interchangeable, but compared to other old ales and barley wine...

Grand Prix F1 San Marino 2006

Grand Prix F1 San Marino 2006 merupakan balapan Formula 1 pada 23 April 2006 di Autodromo Enzo e Dino Ferrari.[1] Lomba Pos No Pembalap Tim Lap Waktu/Tersingkir Grid Poin 1 5 Michael Schumacher Ferrari 62 1:31:06:486 1 10 2 1 Fernando Alonso Renault 62 +2.0 detik 5 8 3 4 Juan Pablo Montoya McLaren-Mercedes 62 +15.8 detik 7 6 4 6 Felipe Massa Ferrari 62 +17.0 detik 4 5 5 3 Kimi Raikkonen McLaren-Mercedes 62 +17.5 detik 8 4 6 9 Mark Webber Williams-Cosworth 62 +37.7 detik 10 3 7 12 Jens...

Bikalpa Dhara Bangladesh

Bangladeshi political party Bikalpa Dhara Bangladesh বিকল্প ধারা বাংলাদেশAlternate Path BangladeshLeaderA. Q. M. Badruddoza ChowdhuryGeneral SecretaryAbdul MannanFoundedMarch 2004; 20 years ago (2004-03)Split fromBangladesh Nationalist PartyHeadquartersBishwa Road, DhakaIdeologySecularismPolitical positionCentreSeats in Jatiya Sangshad0 / 350Party flagPolitics of BangladeshPolitical partiesElections Bikalpa Dhara Bangladesh ...

The Pas (electoral district)

Defunct provincial electoral district in Manitoba, Canada This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: The Pas electoral district – news · newspapers · books · scholar · JSTOR (September 2009) (Learn how and when to remove this message) The Pas Manitoba electoral districtDefunct provincial electoral ...

Brock Peters

Brock PetersPeters, 1961LahirGeorge Fisher(1927-07-02)2 Juli 1927Harlem, New York City, New York, A.S.Meninggal23 Agustus 2005(2005-08-23) (umur 78)Los Angeles, California, A.S.Nama lainBrock G. PetersPendidikanHigh School of Music & ArtCity College of New YorkPekerjaanAktor, pengisi suara, penyanyiTahun aktif1949–2005Suami/istriDolores Daniels (m. 1961; meninggal 1989)Anak1 Gregory Peck dan Peters di To Kill a Mockingb...

Universitas Durham

University of Durhambahasa Latin: Universitas Dunelmensīs Lambang kebesaran Universitas Durham Tampilkan peta yang diperbesarTampilkan peta yang diperkecil InformasiNama lainThe Warden, Masters and Scholars of the University of Durham[1]Motobahasa Latin: Fundamenta eius super montibus sanctis (dari Mazmur 87:1)Moto dalam bahasa InggrisHer foundations are upon the holy hills (Landasannya berada di atas bukit-bukit suci)JenisRiset publik kolegiatDidirikan1832...

Elections in American Samoa

Elections in American Samoa Federal government Presidential caucuses Democratic 2000 2008 2016 2020 2024 Republican 2000 2008 2012 2016 2020 2024 U.S. House of Representatives 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 vte Territorial government Gubernatorial elections 1977 2004 2008 2012 2016 2020 2024 Fono elections 1953 1968 1970 1972 2004 2006 2008 2010 2012 2014 2020 Referendums 1966 1970 1972 1973 1974 1976 Aug Nov...

حالة هارتل-هوكينغ

في الفيزياء النظرية، حالة هارتل- هوكينغ (بالإنجليزية: Hartle–Hawking state)‏ هو نموذج نظري في علم الكون الكمومي اقترحه الفيزيائيان جيمس هارتل وستيفن هوكينغ في عام 1983 يختص بحالة الكون قبل حقبة بلانك.[1] يقترح النموذج فكرة عدم وجود نقطة بداية فعلية للكون عند نشأته من خلال ما يعرف ...

HMS Challenger (1858)

Pour les autres navires du même nom, voir HMS Challenger. Pour les articles homonymes, voir Challenger. Cet article est une ébauche concernant un bateau ou un navire. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Le HMS Challenger durant son voyage d'exploration 1872-1876. Le HMS Challenger (HMS pour His/Her Majesty's Ship), cinquième du nom, est une corvette de la Royal Navy, à assistance vapeur, lancée ...

Old Uyghur

Extinct Siberian Turkic language of Central and East Asia Old UyghurNative toUyghur Khaganate, Qocho, Ganzhou Uyghur KingdomRegionMongolia, Hami, Turpan, GansuEra9th–14th century[1]developed into Western YugurLanguage familyTurkic Common TurkicSiberian TurkicOld TurkicOld UyghurWriting systemOld Turkic script,[2] Old Uyghur alphabetLanguage codesISO 639-3ouiLinguist ListouiGlottologoldu1239 Old Uyghur (simplified Chinese: 回鹘语; traditional Chinese: 回鶻�...