16921-30-5

Basic information

• Product Name: Potassium chloroplatinate
• Synonyms: dipotassium,(oc-6-11)-platinate(2-hexachloro-;dipotassiumhexachloroplatinate;dipotassiumplatinumhexachloride;hexachloro-,dipotassium,(OC-6-11)-Platinate(2-);hexachloro-platinate(2-dipotassium;Platinate(2-),hexachloro-,dipotassium;platinicpotassiumchloride;potassiumplatinum(iv)hexachloride
• CAS NO: 16921-30-5
• Molecular Formula: ClKPt
• Molecular Weight: 269.63
• EINECS: 240-979-3
• Product Categories: Inorganics;halometallate salt;Materials Science;Metal and Ceramic Science;Potassium Salts;Salts;chemical reaction,pharm,electronic,materials
• Mol File: 16921-30-5.mol
• Article Data: 0

Chemical Properties

• Melting Point: 250 °C (dec.)(lit.)
• Appearance: Yellow-Orange/Powder/Solid
• Density: 3.499
• Vapor Pressure: 33900mmHg at 25°C
• Refractive Index: ^=1.825
• Storage Temp.: Storage temperature: no restrictions.
• Solubility: 50g/l
• Water Solubility: 50 g/L (95 ºC)
• Sensitive: Hygroscopic
• Stability: Stable. Incompatible with acids, interhalogen compounds, strong oxidizing agents.
• Merck: 14,7636
• CAS DataBase Reference: Potassium chloroplatinate(CAS DataBase Reference)
• NIST Chemistry Reference: Potassium chloroplatinate(16921-30-5)
• EPA Substance Registry System: Potassium chloroplatinate(16921-30-5)

Safety Data

• Hazard Codes: T
• Statements: 25-41-42/43
• Safety Statements: 22-26-36/37/39-45
• RIDADR: UN 3290 6.1/PG 2
• WGK Germany: 1
• RTECS: TP1650000
• TSCA: Yes
• HazardClass: 6.1
• Hazardous Substances Data: 16921-30-5(Hazardous Substances Data)

Usage

Description

Potassium chloroplatinate, also known as potassium hexachloroplatinate (K2PtCl6), is an orange to yellow crystalline powder that is insoluble in its solid form. It is a source material for the preparation of platinum-based compounds and can be used to create platinum colloids through its reduction in an aqueous solution. Potassium chloroplatinate is produced through a complex process involving the reduction of platinum chloride with sulfurous gas and the addition of potassium chloride. This red-colored crystal is soluble in water but less soluble in alcohol.

Uses

1. Used in Analytical Chemistry:
Potassium chloroplatinate is used as a reagent for the quantitative determination of potassium due to its chemical properties and solubility in water.
2. Used in Photography:
In the past, potassium chloroplatinate was primarily used in the platinum printing process, which involved creating high-quality, durable, and non-fading photographic prints. It was also utilized for toning silver prints to enhance their appearance and stability.
3. Used in the Preparation of Platinum Compounds:
Potassium chloroplatinate serves as a crucial starting material for the synthesis of various platinum-based compounds, which have applications in different industries, including pharmaceuticals, electronics, and automotive catalysts.
4. Used in the Production of Platinum Colloids:
By reducing potassium chloroplatinate in an aqueous solution, platinum colloids can be prepared. These colloids have a wide range of applications, such as in the field of catalysis, electronics, and as components in chemical sensors.

Hazard

Toxic by ingestion and inhalation.

Flammability and Explosibility

Notclassified

Safety Profile

Mutation data reported. Human systemic effects by intradermal route: dermatitis. When heated to decomposition it emits toxic fumes of K2O and Cl-. Used as a catalyst for carbonylation of alkynes. See also PLATINUM COMPOUNDS.

Purification Methods

It crystallises from water (20mL/g) between 100o and 0o. Its solubility in H2O is 0.7% at 0o, 1.12% at 20o, 2.16% at 50o and 5.13% at 100o. [Grube in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1571 1965.]

InChI:InChI=1/6ClH.2K.Pt/h6*1H;;;/q;;;;;;2*+1;+4/p-6