CAS number：16919-58-7
molecular formula：Cl6Pt.2H4N
molecular weight：443.88
EINECS number：240-973-0

English synonyms

Ammoniumchloroplatinate(IV);ammoniumplatinicchloride;diammonium,(oc-6-11)-platinate(2-hexachloro-;diammoniumhexachloroplatinate(2-);Platinate(2-),hexachloro-, aMMoniuM (1:2), (OC-6-11)-;Ammonium hexachloroplatinate(IV) 99.999% trace metals basis;Ammonium hexachloroplatinate(Ⅳ);Pt44%Ammonium hexachloroplatinate(IV IV)

Related categories

Catalysis and inorganic chemistry; general reagents; platinum; biochemical reagents; precious metal catalysts; chemical reaction, pharm, electronic, materials; halometallate salt; Inorganics

Introduction

Ammonium chloroplatinate is a yellow equiaxed crystal, which is decomposed by heat and is almost insoluble in water and ethanol. For platinum catalyst (platinum black, platinum asbestos).

Chemical properties

Use

●  Chloroplatinic acid is mainly used in industry to prepare precious metal catalysts, precious metal electroplating layers and platinum asbestos, and can also be used to precipitate alkaloids, as well as to test potassium and ammonium plasma in analytical chemistry. However, chloroplatinic acid is easily weathered in the air, has a low melting point and an unstable crystal state. Its above characteristics determine that chloroplatinic acid is not conducive to storage and transportation. In fact, chloroplatinic acid is mainly used in its use. Therefore, it is usually necessary to convert chloroplatinic acid into stable ammonium chloroplatinate to facilitate its storage, transportation and use.

●  For diamagnetic materials or semiconductors. Also used for platinum electroplating and preparation of sponge platinum.

●  Used as analytical reagent, also used in the manufacture of platinum sea brocade

Production method

It is obtained by the reaction of ammonium chloride with chloroplatinum (hydrogen) acid.
(1) Dissolution of platinum metal
18.2g of 20wt% hydrochloric acid and 71.7g of 70wt% perchloric acid were added to 19.5g of platinum metal, and 3.5g of chlorine gas was introduced, heated to 40°C, and a mixed solution was obtained after the platinum metal was completely dissolved.
(2) Prepare chloroplatinic acid solution
The mixed solution was heated to 30° C. and evaporated to dryness slowly, and then distilled water was added to obtain a 0.1 mol/L chloroplatinic acid solution.
(3) Configure ammonium chloride solution
Add excess ammonium chloride to distilled water, heat to 40° C. until the remaining ammonium chloride is no longer dissolved, and then filter to obtain a hot saturated solution of ammonium chloride.
(4) Synthesis of Ammonium Chloroplatinate
To the 0.1 mol/L chloroplatinic acid solution, slowly add a hot saturated solution of ammonium chloride at 40°C while stirring to produce a yellow precipitate of ammonium chloroplatinate. Continue to add ammonium chloride solution until no new precipitate is formed, and filter out the precipitate. , washed twice with a hot saturated solution of ammonium chloride, filtered with a Buchner funnel, washed with absolute ethanol and dried, and dried at 50°C in an oven to obtain ammonium chloroplatinate.
The yield of the obtained ammonium chloroplatinate was determined to be 98.2%, and the purity of the prepared ammonium chloroplatinate was 99.1%.