Potassium

• Catalog No.: 12621
• CAS Number: 7440-09-7
• M. F.: K
• M. W.: 39.0983

SYNONYMS

• Title: 钾
• IUPAC name: potassium
• IUPAC Traditional name: potassium

DATABASE IDS

• CAS Number: 7440-09-7
• EC Number: 231-119-8
• MDL Number: MFCD00133776

PROPERTIES

• Concentration: ≥98% in paraffin
• Empirical Formula (Hill Notation): K
• Apperance: pieces (stored under mineral oil, heavy)
• Boiling Point: 760 °C(lit.)
• Density: 0.86 g/mL at 25 °C(lit.)
• Melting Point: 64 °C(lit.)
• Resistivity: 6.1 μΩ-cm, 20°C
• Vapor Pressure: 0.09 mmHg ( 260 °C)
• GHS Signal Word: Danger
• GHS Hazard statements: H260-H314
• European Hazard Symbols: Flammable (F)
• European Hazard Symbols: Corrosive (C)
• Personal Protective Equipment: Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
• GHS Precautionary statements: P223-P231 + P232-P280-P305 + P351 + P338-P370 + P378-P422
• RID/ADR: UN 2257 4.3/PG 1
• Risk Statements: 14/15-34
• RTECS: TS6460000
• Safety Statements: 5-8-45
• Supplemental Hazard Statements: Reacts violently with water.
• Hazard Class: 4.3
• UN Number: 2257
• Packing Group: 1
• German water hazard class: 1

DETAILS

Description (English)

Application
Combines under pressure with silver metal to form 2 new compounds: K2Ag and K3Ag.†

Description (简体中文)

Application
高压下与银结合可形成两种新的化合物：K2Ag 和 K3Ag。