Terbium , 99.9%metalsbasis , 7440-27-9

Synonym(s):
;Terbium

CAS NO.：7440-27-9

Empirical Formula: Tb

Molecular Weight: 158.93

MDL number: MFCD00011256

EINECS: 231-137-6

PRODUCT Properties

• Melting point: 1356 °C (lit.)
• Boiling point: 3230 °C (lit.)
• Density: 8.234 g/mL at 25 °C (lit.)
• form: powder
• color: Silver-gray
• Specific Gravity: 8.234
• Resistivity: 116 μΩ-cm, 20°C
• Water Solubility: Insoluble in water.
• Sensitive: Air & Moisture Sensitive
• Merck: 13,9232
• Exposure limits: ACGIH: TWA 2 ppm; STEL 4 ppm; OSHA: TWA 2 ppm(5 mg/m3); NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3)
• Stability: Stable, but moisture sensitive. Reacts with halogens, strong acids. The powder is highly flammable.
• CAS DataBase Reference: 7440-27-9(CAS DataBase Reference)
• EPA Substance Registry System: Terbium (7440-27-9)

Description and Uses

There are few uses for terbium. However, terbium can be used as an activator for greenphosphor in TV tubes, and some of its compounds are used to produce laser lights. It is alsoused to “dope” (coat) some forms of solid-state instruments, as a stabilizer in fuel cells so thatthey can operate at high temperatures, and as a metal for control rods in nuclear reactors.

Safety

• Symbol(GHS): GHS02,GHS07
• Signal word: Danger
• Hazard statements: H228-H251-H315-H319-H413
• Precautionary statements: P210-P235-P240-P273-P302+P352-P305+P351+P338
• Hazard Codes: F,T
• Risk Statements: 11-34-23/24/25
• Safety Statements: 22-24/25-36/37/39-33-16-45-28-27-26
• RIDADR: UN 3089 4.1/PG 2
• WGK Germany: 3
• TSCA: Yes
• HazardClass: 8
• PackingGroup: III
• HS Code: 28053013