Ytterbium , Powder, 99.9%metalsbasis , 7440-64-4

Synonym(s):
;Ytterbium

CAS NO.：7440-64-4

Empirical Formula: Yb

Molecular Weight: 173.04

MDL number: MFCD00011286

EINECS: 231-173-2

PRODUCT Properties

• Melting point: 824 °C(lit.)
• Boiling point: 1196 °C(lit.)
• Density: 6.54 g/mL at 25 °C(lit.)
• storage temp.: Flammables area
• solubility: soluble in dilute acid solutions
• form: powder
• Specific Gravity: 6.97
• color: Silver-gray
• Resistivity: 28 μΩ-cm, 20°C
• Water Solubility: It reacts slowly with water and is soluble in dilute acids.
• Sensitive: Air & Moisture Sensitive
• Merck: 13,10160
• 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)

Description and Uses

There is not much commercial use for ytterbium. Radioactive ytterbium can be used for asmall portable X-ray source and as an alloy to make special types of strong steel. The oxides ofytterbium are used to make lasers and some synthetic gemstones.

Safety

• Symbol(GHS): GHS02,GHS07
• Signal word: Danger
• Hazard statements: H228-H302+H312+H332-H315-H319-H335
• Precautionary statements: P210-P280-P301+P312-P302+P352+P312-P304+P340+P312-P305+P351+P338
• Hazard Codes: Xn,F,Xi
• Risk Statements: 36/37/38-20/21/22-11-36/38
• Safety Statements: 36-33-16-26
• RIDADR: UN 3089 4.1/PG 2
• WGK Germany: 3
• RTECS: ZG1925000
• TSCA: Yes
• HazardClass: 4.2
• PackingGroup: I
• HS Code: 28053090