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50790

Sigma-Aldrich

Gold(III) chloride hydrate

~50% Au basis

Synonym(s):

Auric chloride, Chloroauric acid, Hydrogen tetrachloroaurate(III) hydrate, Tetrachloroauric(III) acid

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About This Item

Linear Formula:
HAuCl4 · aq
CAS Number:
27988-77-8
Molecular Weight:
339.79 (anhydrous basis)
EC Number:
240-948-4
MDL number:
MFCD00149903
UNSPSC Code:
12352302
PubChem Substance ID:
57651272
NACRES:
NA.23

Quality Level

100

form

powder or crystals

concentration

~50% Au

color

yellow

density

3.9 g/mL at 25 °C

SMILES string

O.Cl.Cl[Au](Cl)Cl

InChI

1S/Au.4ClH.H2O/h;4*1H;1H2/q+3;;;;;/p-3

InChI key

OVJUDSKPNIBLOO-UHFFFAOYSA-K

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General description

Gold (III) chloride hydrate,also known as chloroauric acid, is used as precursor to synthesize gold nanoparticles. It also exihibits very high catalytic activity.

Application

Used as a catalyst in asymmetric aldol reactions, diboration of vinylarenes, dehydrogenative dimerizations of trialkystannanes, carbonylation of olefins and amines, C-C, C-O bond couplings, oxidation of sulfides, selective oxidation of thioethers.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B - STOT RE 2 Oral

target_organs

Kidney

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Raquel Casado et al.
Journal of the American Chemical Society, 125(39), 11925-11935 (2003-09-25)
Different inorganic and organometallic gold(III) and gold(I) complexes have been tested in the addition of water and methanol to terminal alkynes. Anionic and neutral organometallic gold(III) compounds can efficiently mediate these reactions in neutral media in refluxing methanol. The compounds
The crystal structure of gold (III) chloride
Acta Crystallographica, 11(4), 248-288 (1958)

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