Description
Tetrachloroauric(III) acid trihydrate is a high-purity inorganic gold reagent with the empirical formula HAuCl₄ · 3 H₂O and CAS number 16961-25-4. Offered at a minimum purity of 99,0 % in p.a. grade, the material has a molar mass of 393,83 g/mol and a density of 3,9 g/cm³. This trihydrate form is used in laboratory synthesis of gold nanoparticles, biological staining, and related dye applications where a defined tetrachloroaurate source is required. Available from manufacturer Carl ROTH, the reagent supports chemical and life-science workflows that depend on consistent assay and hydrate composition. Identification under EG number 605-557-9 aligns the product with standard European substance records used for inventory and documentation. Categories such as dyes for biological applications and general laboratory chemicals benefit from this compact format when preparing stock solutions, chromogenic reagents, or controlled gold deposition experiments under routine fume-hood conditions.
This article is part of Dyes, stains & indicators.
Key features
- Appearance: yellow to reddish-yellow crystals
- Assay (based on Au): ≥98.0 %
- CAS number: 16961-25-4
- Pack sizes: 1 g, 5 g
- EG nr.: 605-557-9
- Purity: min. 99,0 %, p.a.
- Empirical formula: HAuCl₄ · 3 H₂O
- Molar mass: 393,83 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Tetrachloroauric(III) acid trihydrate, min. 99,0 %, p.a., 1 g, glass
What is this article?
Tetrachloroauric(III) acid trihydrate, min. 99,0 %, p.a., 1 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Dyes, stains & indicators, in Lab chemicals.
A dye or a stain binds, or changes colour, so that something invisible becomes visible. An indicator changes at a pH or a redox point. A fluorescent dye absorbs one wavelength and emits another, which is how a microscope or a plate reader picks it out. The excitation and emission, or the transition interval, are the specification. The colour name on the label is not. Structures are on PubChem under IUPAC names. Methods are in the PubMed literature.
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The category is Dyes, stains & indicators. The catalogue is Lab chemicals.
Shelves beside this one are Fluorescent dyes & labels, Microscopy stains & staining solutions and Dyes & pigments.
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