Dipotassium stannate trihydrate
[CAS# 12125-03-0]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt
• Name: Dipotassium stannate trihydrate
• Synonyms: Potassium tin oxide trihydrate
• Molecular Formula: K₂SnO₃^.3(H₂O)
• Molecular Weight: 298.93
• CAS Registry Number: 12125-03-0
• EC Number: 682-903-5
• SMILES: O.O.O.[O-][Sn](=O)[O-].[K+].[K+]

Properties

• Density: 3.197 g/mL (Expl.)
• Melting point: 140 ºC (decomp.) (Expl.)

Safety Data

• Hazard Symbols: GHS07 Warning
• Hazard Statements: H315-H319-H335
• Precautionary Statements: P261-P264-P264+P265-P271-P280-P302+P352-P304+P340-P305+P351+P338-P319-P321-P332+P317-P337+P317-P362+P364-P403+P233-P405-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2	H319
Skin irritation	Skin Irrit.	2	H315

Discovory and Applicatios

Dipotassium stannate trihydrate is an inorganic compound with the chemical formula K2SnO3·3H2O. This substance is a potassium salt of stannic acid, containing both potassium and tin in its structure. The discovery of dipotassium stannate trihydrate can be traced back to the study of stannate compounds, which are known for their diverse applications in industrial chemistry, particularly in the synthesis of metal salts and in the preparation of catalysts. The compound was first identified in the context of exploring potential uses of tin-based compounds, which were gaining attention due to their varied reactivity and ability to form useful salts when combined with other elements like potassium.

Dipotassium stannate trihydrate is typically synthesized by reacting tin oxide (SnO2) with potassium hydroxide (KOH) under controlled conditions. The reaction results in the formation of a white, crystalline compound that contains both potassium and tin in its structure, along with water molecules integrated into the lattice. The synthesis process has been optimized for industrial production, ensuring high yields and purity. As a hydrate, dipotassium stannate trihydrate forms crystals that are stable under normal conditions but can lose their water content when exposed to heat, turning into the anhydrous form of dipotassium stannate.

The compound has several notable applications in both industrial and chemical processes. One of the primary uses of dipotassium stannate trihydrate is as a precursor in the preparation of other tin-based compounds. It is often employed in the production of various stannates, which are utilized in the manufacture of pigments, ceramics, and glass. In the ceramics industry, for example, tin compounds, including dipotassium stannate, are used to create coatings and glazes that provide desired optical properties, such as opacity and brightness. This makes dipotassium stannate an important intermediate in the production of high-quality ceramics.

In addition to its role in ceramics, dipotassium stannate trihydrate is used in certain catalytic processes. Stannates, in general, have been studied for their potential catalytic properties, particularly in reactions involving organic compounds. Dipotassium stannate trihydrate can serve as a catalyst or a catalyst precursor in various reactions, including the synthesis of organic chemicals and in the breakdown of complex organic molecules. The compound's ability to coordinate with other elements, such as metals, makes it useful in the preparation of mixed metal catalysts, which can enhance reaction efficiency and selectivity.

Another application of dipotassium stannate trihydrate is in the treatment of wastewater and other environmental processes. Tin-based compounds have been explored for their ability to interact with pollutants, helping to remove toxic substances from industrial effluents. Dipotassium stannate may play a role in this context by helping to precipitate or stabilize certain contaminants, thereby facilitating their removal. This potential use aligns with the growing demand for environmentally friendly and sustainable chemical processes.

Despite its wide range of applications, dipotassium stannate trihydrate must be handled with care, as like many tin compounds, it can be toxic in large quantities. Its use in industrial processes is typically regulated, ensuring that proper safety protocols are followed. Additionally, the environmental impact of using such compounds is considered, and their disposal is managed to avoid contamination of ecosystems.

In summary, dipotassium stannate trihydrate is an important compound with diverse applications in industry and environmental chemistry. Its role in the production of tin-based compounds, ceramics, and catalytic processes, as well as its potential use in environmental applications, makes it a valuable material in several chemical sectors.