:Gold(III) hydroxide

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| Reference = {{Citation|last = Lide|first = David R.|year = 1998|title = Handbook of Chemistry and Physics|edition = 87|location = Boca Raton, FL|publisher = CRC Press|isbn = 0-8493-0594-2|pages = 4–59}}

| SystematicName = Gold(3+) trihydroxide{{Cite web|title = CID 11536100 - Compound Summary|url = https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=11536100&loc=ec_rcs|work = PubChem Compound|publisher = National Center for Biotechnology Information|access-date = 6 October 2011|location = USA|date = 26 October 2006|at = Identification and Related Records}}

| OtherNames = Auric acid{{cite journal |id={{ProQuest|89661353}} |last1=Figuier |first1=L |title=ART. XXIV.--OBSERVATIONS ON THE PREPARATION OF THE OXIDE OF GOLD, (AURIC ACID.) |journal=American Journal of Pharmacy |location=Philadelphia |volume=19 |date=April 1848 |pages=102 }}

Gold hydroxide{{cite journal |last1=Kah |first1=James C. Y. |last2=Phonthammachai |first2=Nopphawan |last3=Wan |first3=Rachel C. Y. |last4=Song |first4=Jing |last5=White |first5=Timothy |last6=Mhaisalkar |first6=Subodh |last7=Ahmadb |first7=Iman |last8=Shepparda |first8=Colin |last9=Olivoc |first9=Malini |title=Synthesis of gold nanoshells based on the depositionprecipitation process |journal=Gold Bulletin |date=March 2008 |volume=41 |issue=1 |pages=23–36 |doi=10.1007/BF03215620|s2cid=93916360 |doi-access=free }}

Gold trihydroxide{{cite journal |last1=Diaz-Morales |first1=Oscar |last2=Calle-Vallejo |first2=Federico |last3=de Munck |first3=Casper |last4=Koper |first4=Marc T. M. |title=Electrochemical water splitting by gold: evidence for an oxide decomposition mechanism |journal=Chemical Science |date=2013 |volume=4 |issue=6 |pages=2334 |doi=10.1039/C3SC50301A}}

| Section1 = {{Chembox Identifiers

| CASNo_Ref = {{cascite|correct|??}}

| CASNo = 1303-52-2

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| UNII = 8YE7R9L22G

| PubChem = 11536100

| ChemSpiderID = 21170948

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| EINECS = 215-120-0

| SMILES = O[Au](O)O

| SMILES1 = [OH-].[OH-].[OH-].[Au+3]

| StdInChI = 1S/Au.3H2O/h;3*1H2/q+3;;;/p-3

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| StdInChIKey = WDZVNNYQBQRJRX-UHFFFAOYSA-K

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| Section2 = {{Chembox Properties

| Formula = {{Chem|H|3|Au|O|3}}

| MolarMass = 247.9886 g mol⁻¹

| Appearance = Vivid, dark yellow crystals

| Solubility = 0.00007 g/100 g

| pKa = <11.7, 13.36, >15.3{{cite book|title=Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution|editor-first=D. D.|editor-last=Perrin|edition=2nd|series=IUPAC Chemical Data|issue=29|publisher=Pergamon|location=Oxford|year=1982|publication-date=1984|orig-date=1969|lccn=82-16524|isbn=0-08-029214-3|at=Entry 87}}

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| Section3 = {{Chembox Structure

| MolShape = Trigonal dihedral at Au

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| Section4 = {{Chembox Hazards

| ExternalSDS = [http://msds.chem.ox.ac.uk/GO/gold_III_hydroxide.html Oxford]

| GHS_ref={{cite web |title=C&L Inventory |url=https://www.echa.europa.eu/web/guest/information-on-chemicals/cl-inventory-database/-/discli/details/87420 |website=www.echa.europa.eu |access-date=13 December 2021}}

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| Section5 = {{Chembox Related

| OtherCompounds = Gold(III) chloride

Copper(II) hydroxide

Gold(III) oxide

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Gold(III) hydroxide, gold trihydroxide, or gold hydroxide is an inorganic compound, a hydroxide of gold, with formula Au(OH)₃. It is also called auric acid with formula H₃AuO₃. It is easily dehydrated above 140 °C to gold(III) oxide. Salts of auric acid are termed aurates.

Gold hydroxide is used in medicine, porcelain making, gold plating, and daguerrotypes. Gold hydroxide deposited on suitable carriers can be used for preparation of gold catalysts.{{citation needed|date=February 2023}}

Gold hydroxide is a product of electrochemical corrosion of gold metalization subjected to moisture and positive electric potential; it is one of the corrosion failure modes of microelectronics. Voluminous gold hydroxide is produced from gold metalization; after the layer grows thick it may spall, and the conductive particles may cause short circuits or leakage paths. The decreased thickness of the gold layer may also lead to an increase in its electrical resistance, which can also lead to electrical failure.{{cite book |last1=Schultze |first1=J. Walter |last2=Osaka |first2=Tetsuya |last3=Datta |first3=Madhav |title=Electrochemical Microsystem Technologies |date=2002 |publisher=CRC Press |isbn=978-0-203-21921-8 |page=341 |url=https://books.google.com/books?id=7iXwf1axhC0C&dq=%22gold+hydroxide%22&pg=PA341 |doi=10.4324/9780203219218 }}