Chloroplatinic acid hydrate

≥99.9% trace metals basis

Hydrogen hexachloroplatinate(IV) hydrate, Platinic chloride hydrate, Hexachloroplatinic(IV) acid hydrate
Linear Formula:
H2PtCl6 · xH2O
CAS Number:
Molecular Weight:
409.81 (anhydrous basis)
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


≥99.9% trace metals basis


Pt, 37-40%


60 °C (lit.)


2.43 g/mL at 25 °C (lit.)

SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide

General description

Chloroplatinic acid hydrate is the most readily available compound of platinum. It may be prepared by dissolving platinum in aqua regia. Thermogravimetric analysis of this compound has been reported. The analysis shows the loss of water followed by formation of platinum tetrachloride (PtCl4) at 220 °C and β-PtCl2 at 350 °C finally decomposing to platinum metal at 500 °C.


Chloroplatinic acid hydrate may be used:
  • in the determination of potassium, by selective precipitation as potassium chloroplatinate.
  • in the purification of platinum.
  • In catalysis during the addition of silicon hydrides to olefinic double bonds and in platinum-catalyzed hydrosilylation of alkynes.


1, 5, 25 g in glass bottle

Storage and Stability

1. Hygroscopic material, always handle in a glove bag or a glove box filled with dry inert gas
2. Recommended for one time use to prevent water absorption and degradation. If necessary, once opened, repack and seal under dry inert gas.
3. Store with care. Prevent from light. Always store in well-sealed containers in a dry inert atmosphere. Recommended to store containers in a secondary desiccator with desiccant in a dry inert atmosphere.

Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN 2507 8 / PGIII

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

SA Cotton
Chemistry of Precious Metals null
The Separation and Determination of the Alkali Metals Using Perchloric Acid. V. Perchloric Acid and Chloroplatinic Acid in the Determination of Small Amounts of Potassium in the Presence of Large Amounts of Sodium
Smith GF and Gring JL
Journal of the American Chemical Society, 55(10), 3957-3961 (1933)
The Addition of Silicon Hydrides to Olefinic Double Bonds. Part II. The Use of Group VIII Metal Catalysts
Speir JL, et al.
Journal of the American Chemical Society, 79(4), 974-979 (1957)
The Addition of Silicon Hydrides to Olefinic Double Bonds. Part III. The Addition to Non-terminal Olefins in the Presence of Chloroplatinic Acid
Saam JC and Speier JL
Journal of the American Chemical Society, 80(15), 4104-4106 (1958)
Chun-Yuan Wang et al.
Nature communications, 6, 7734-7734 (2015-07-16)
The development of ultrasmooth, macroscopic-sized silver (Ag) crystals exhibiting reduced losses is critical to fully characterize the ultimate performance of Ag as a plasmonic material, and to enable cascaded and integrated plasmonic devices. Here we demonstrate the growth of single-crystal...

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon


Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.