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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:
Molecular Weight:
409.81 (anhydrous basis)
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

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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1 of 4

This Item
254029206083P7082
vibrant-m

520896

Chloroplatinic acid hydrate

-
vibrant-m

254029

Chloroplatinic acid hydrate

-
vibrant-m

206083

Chloroplatinic acid hexahydrate

Essential Grade
vibrant-m

P7082

Chloroplatinic acid hexahydrate

Premium Grade
assay

≥99.9% trace metals basis

assay

99.995% trace metals basis

assay

-

assay

-

density

2.43 g/mL at 25 °C (lit.)

density

2.43 g/mL at 25 °C (lit.)

density

-

density

-

mp

60 °C (lit.)

mp

60 °C (lit.)

mp

-

mp

-

composition

Pt, 37-40%

composition

Pt, 38-40%

composition

-

composition

-

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

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.

signalword

Danger

Hazard Classifications

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

Storage Class

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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Chemistry of Precious Metals null
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)
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 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
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