Gold(III) chloride trihydrate

≥99.9% trace metals basis

Hydrogen tetrachloroaurate(III), Tetrachloroauric(III) acid
Linear Formula:
HAuCl4 · 3H2O
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


≥99.9% trace metals basis


crystals and lumps


Au, 48.5-50.25%


glass bottle of 1 g
glass bottle of 25 g
glass bottle of 5 g


≤ 1000.0  ppm Trace Metal Analysis

SMILES string




InChI key


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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


CorrosionExclamation mark

Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN 3260 8 / PGII

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
  1. 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.

  2. 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.

  3. What is Gold (III) chloride trihydrate, Product 520918, soluble in?

    Gold (III) chloride trihydrate is very soluble in water and polar organic solvents.

  4. What is the melting point of Gold (III) chloride trihydrate, Product 520918?

    This product has a melting point of 50 deg C, please note that it will decompose at this temperature.

  5. 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.

  6. 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.

  7. 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. 

  8. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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Embryotoxicity of cobalt ferrite and gold nanoparticles: A first in vitro approach
Di Guglielmo C, et al.
Reproductive Toxicology, 30(2), 271-276 (2010)
A Microarray-based Multiplexed Scanometric Immunoassay for Protein Cancer Markers Using Gold Nanoparticle Probes.
Kim D, et al.
Analytical Chemistry, 81(21), 9183?9187-9183?9187 (2009)
One-pot preparation of creatinine-functionalized gold nanoparticles for colorimetric detection of silver ions
He Y, et al.
Plasmonics (Norwell, Mass.), 11(2), 587-591 (2016)
Bo Wang et al.
Biomacromolecules, 7(4), 1203-1209 (2006-04-11)
Synthesis of gold nanoparticles on surfaces has been accomplished by the incubation of poly(dimethylsiloxane) (PDMS) films in tetrachloroauric(III) acid and chitosan solution at room temperature and 4 degrees C. One important point in the present study is that the synthesis...
Chih-Yuan Chen et al.
Analytical chemistry, 86(24), 11942-11945 (2014-11-25)
Localized surface plasmon resonance (LSPR) represents a sensitive and versatile method for detection of biomolecules in a label-free fashion, but identification of bound analytes can be challenging with LSPR alone, especially for samples in a complex medium. We report the...
Solvothermal synthesis is a method for preparing a variety of materials such as metals, semiconductors, ceramics, and polymers.
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Plasmonic nanoparticles have unique optical properties that can be tailored to suit a variety of applications in the biotechnology1–8 and electronics9–16 industries.
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