Tantalum

• Catalog No.: 262838
• CAS Number: 7440-25-7
• M. F.: Ta
• M. W.: 180.9479
• Purity: ≥99.9%

SYNONYMS

• Title: 钽
• IUPAC name: tantalum
• IUPAC Traditional name: tantalum

DATABASE IDS

• EC Number: 231-135-5
• CAS Number: 7440-25-7
• MDL Number: MFCD00011252

PROPERTIES

• Auto Ignition Point: 572 °F
• Boiling Point: 5425 °C(lit.)
• Density: 16.69 g/cm3(lit.)
• Melting Point: 2996 °C(lit.)
• Resistivity: 13.5 μΩ-cm, 20°C
• Vapor Pressure: <0.01 mmHg ( 537.2 °C)
• Apperance: powder
• European Hazard Symbols: Flammable (F)
• European Hazard Symbols: Irritant (Xi)
• RID/ADR: UN 3089 4.1/PG 2
• Risk Statements: 11-36/37/38
• RTECS: WW5505000
• Safety Statements: 26-36/37/39
• Hazard Class: 4.1
• UN Number: 3089
• Packing Group: 2
• German water hazard class: -
• Empirical Formula (Hill Notation): Ta
• Particle Size: -40-+200 mesh
• Purity: ≥99.9%

DETAILS

Description (English)

Application
Employed in the synthesis of metal-rich layered tellurides, TaNi2Te2 and TaCo2Te2, which possess ideal characteristics for photovoltaic applications, for surface scanning studies, and which may give clean and atomically flat surfaces.1 Starting material for new edge-bridged octahedral M6 cluster compounds such as CsErTa6Cl18, for which electron and stability studies were performed.2

Description (简体中文)

Application
用于合成富含金属的层状碲化物 TaNi2Te2 和 TaCo2Te2，这些碲化物具有光伏应用、表面扫描研究所需的理想特性，并且可以提供清洁的原子级平面。1新型边缘桥八面体 M6 簇合物（如 CsErTa6Cl18）的原料，可对其进行电子和稳定性研究。2