Gold(III) hydroxide

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Gold(III) hydroxide[1]
Identifiers
CAS number 1303-52-2 YesY
PubChem 11536100
ChemSpider 21170948 N
EC number 215-120-0
Jmol-3D images Image 1
Image 2
Properties
Molecular formula AuH
3
O
3
Molar mass 247.9886 g mol-1
Appearance Vivid, dark yellow crystals
Structure
Molecular shape Trigonal dihedral at Au
Hazards
MSDS Oxford
EU classification Irritant Xi
R-phrases R36/37/38
S-phrases S26, S37/39
Related compounds
Related compounds Gold(III) chloride

Copper(II) hydroxide
Gold(III) oxide

Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

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.[3]

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.[4]

References[edit]

  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–59, ISBN 0-8493-0594-2 
  2. ^ "CID 11536100 - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 October 2006. Identification and Related Records. Retrieved 6 October 2011. 
  3. ^ http://www.cata.ucl.ac.be/printed/p100-idakiev.doc
  4. ^ http://books.google.com/books?id=7iXwf1axhC0C&pg=PA341&dq=%22gold+hydroxide%22&lr=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=50&as_brr=3&cd=26#v=onepage&q=%22gold%20hydroxide%22&f=false