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520918 Sigma-Aldrich

Gold(III) chloride trihydrate

≥99.9% trace metals basis

Synonym: Hydrogen tetrachloroaurate(III), Tetrachloroauric(III) acid



Related Categories Essential Chemicals, Gold Salts, Materials Science, Metal and Ceramic Science, Research Essentials,
Quality Level   200
assay   ≥99.9% trace metals basis
form   crystals and lumps
composition   Au, 48.5-50.25%
packaging   glass bottle of 1 g
  glass bottle of 25 g
  glass bottle of 5 g
SMILES string   Cl[H].[H]O[H].[H]O[H].[H]O[H].Cl[Au](Cl)Cl
InChI   1S/Au.4ClH.3H2O/h;4*1H;3*1H2/q+3;;;;;;;/p-3


General description

The embryotoxicity of gold salt (HAuCl4 · 3H2O) is weaker than the embryotoxicities of a number of other nanoparticles used infor biomedical applications.


Gold(III) chloride trihydrate can be used in the fabrication of colorimetric aptasensor for staphylococcus aureus. It can be reduced with polygala tenuifolia roots (green reducing agent) to produce gold nanoparticles (AuNPs).


1, 5, 25 g in glass bottle

Safety & Documentation

Safety Information

Signal word 
Hazard statements 
UN 3260 8 / PGII
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
What isGold (III) chloride trihydrate, Product 520918, soluble in?
Gold (III) chloride trihydrate is very soluble in water and polar organic solvents.
What is the melting point of Gold (III) chloride trihydrate, Product 520918?
This product has a melting point of 50 degC, please note that it willdecompose at this temperature.
How should Gold (III) chloride trihydrate, Product 520918, be stored?
We would recommend storing this at room temperature in accordance with our MSDS. This product is light and moisture sensitive so in order to prolong the life of the product it should be stored under inert gas and the bottle should be wrapped in aluminum foil or stored in a dark place.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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Protocols & Articles


Solvothermal Synthesis of Nanoparticles

Solvothermal synthesis is a method for preparing a variety of materials such as metals, semiconductors, ceramics, and polymers. The process involves the use of a solvent under moderate to high pressu...
Prof. Bonnie Gersten
Chemfiles Volume 5 Article 13
Keywords: Absorption, Applications, Ceramics, Reductions, Semiconductor, Spectra, Type

Synthesis of Gold Nanorods: Avoiding Common Pitfalls

NanoHybrids Inc. 3913 Todd Ln #310, Austin, TX 78744, USA *Email: kimberly.homan@nanohybrids.net
Brantley C. Henson, Justin T. Harris, Kimberly A. Homan*
Material Matters, 2017, 12.1
Keywords: AGE, Absorption, Addition reactions, Asymmetric synthesis, Centrifugation, Clinical, Degradations, Deposition, Indicators, Industries, Infrared spectroscopy, Ligands, Microscopy, Precipitation, Purification, Reductions, Scanning electron microscopy, Separation, Spectroscopy, Transmission electron microscopy

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