16924-00-8

Basic information

• Product Name: POTASSIUM HEPTAFLUOROTANTALATE(V)
• Synonyms: dipotassiumheptafluorotantalate(k2taf7);heptafluoro-tantalate(2-dipotassium;heptafluro-tantalate(2-dipotassium;potassiumfluorotanatalate(k2taf7);potassiumfluorotantalate;potassiumfluotantalate;potassiumtantalumfluoride[k2taf5];potassiumtantalumfluoride[k2taf7]
• CAS NO: 16924-00-8
• Molecular Formula: F7K2Ta
• Molecular Weight: 392.13
• EINECS: 240-986-1
• Product Categories: Metal and Ceramic Science;Potassium Salts;Salts
• Mol File: 16924-00-8.mol
• Article Data: 0

Chemical Properties

• Melting Point: °Cd ec.)
• Appearance: /Powder
• Density: 4.56 g/mL at 25 °C(lit.)
• Vapor Pressure: 0Pa at 20℃
• Water Solubility: Decomposes in water. Slightly soluble in hydrogen fluoride.
• CAS DataBase Reference: POTASSIUM HEPTAFLUOROTANTALATE(V)(CAS DataBase Reference)
• NIST Chemistry Reference: POTASSIUM HEPTAFLUOROTANTALATE(V)(16924-00-8)
• EPA Substance Registry System: POTASSIUM HEPTAFLUOROTANTALATE(V)(16924-00-8)

Safety Data

• Hazard Codes: T,Xi
• Statements: 23/25
• Safety Statements: 45
• RIDADR: UN 3288 6.1/PG 3
• WGK Germany: 1
• RTECS: TT1225000
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 16924-00-8(Hazardous Substances Data)

Usage

Chemical Properties

Different sources of media describe the Chemical Properties of 16924-00-8 differently. You can refer to the following data:
1. White, silky needles. Slightly soluble in cold water; quite soluble in hot water.
2. Potassium heptafluorotantalate, K2TaF7, crystallizes in colorless, rhombic needles. It hydrolyzes in boiling water containing no excess of hydrofluoric acid. The solubility of potassium heptafluorotantalate in hydrofluoric acid decreases from 60 g/100 mL at 100 °C to 0.5 g/100 mL at room temperature. The different solubility characteristics of K2TaF7 and K2NbOF5 are the fundamental basis of the Marignac process.

Uses

Different sources of media describe the Uses of 16924-00-8 differently. You can refer to the following data:
1. It is an important raw material. Used in chemical research. Use as primary and secondary intermediate(Pharmaceutical Intermediates). Used in the production and preparation of tantalum powder.
2. Intermediate in preparation of pure tantalum.

Hazard

Toxic by inhalation.

Flammability and Explosibility

Nonflammable

Safety Profile

Poison by ingestion and intraperitoneal routes. When heated to decomposition it emits toxic fumes of F- and K2O.

InChI:InChI=1/FH.K.Ta/h1H;;/q;+1;+5/p-1