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520896

Sigma-Aldrich

Chloroplatinic acid hydrate

≥99.9% trace metals basis

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Synonym(s):
Hexachloroplatinic(IV) acid hydrate, Hydrogen hexachloroplatinate(IV) hydrate, Platinic chloride hydrate
Linear Formula:
H2PtCl6 · xH2O
CAS Number:
26023-84-7
Molecular Weight:
409.81 (anhydrous basis)
EC Number:
241-010-7
MDL number:
MFCD00149909
UNSPSC Code:
12352300
PubChem Substance ID:
24874178
NACRES:
NA.23

Quality Level

200

Assay

≥99.9% trace metals basis

composition

Pt, 37-40%

mp

60 °C (lit.)

density

2.43 g/mL at 25 °C (lit.)

SMILES string

O.Cl.Cl.Cl[Pt](Cl)(Cl)Cl

InChI

1S/6ClH.H2O.Pt/h6*1H;1H2;/q;;;;;;;+4/p-4

InChI key

SLIOYUPLNYLSSR-UHFFFAOYSA-J

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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.

Application

Hydrosilylation Catalysts
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.

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

Danger

Hazard Statements

H301,H314,H317,H334

Hazard Classifications

Acute Tox. 3 Oral - Eye Dam. 1 - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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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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)
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 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)
Ricardo M Santos et al.
eLife, 10 (2021-02-16)
Cholinergic fast time-scale modulation of cortical physiology is critical for cognition, but direct local measurement of neuromodulators in vivo is challenging. Choline oxidase (ChOx)-based electrochemical biosensors have been used to capture fast cholinergic signals in behaving animals. However, these transients
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