Rhenium , 99.999% , 7440-15-5

Synonym(s):
;Rhenium;Rhenium element;Rhenium nitrate solution

CAS NO.：7440-15-5

Empirical Formula: Re

Molecular Weight: 186.21

MDL number: MFCD00011195

EINECS: 231-124-5

PRODUCT Properties

• Melting point: 3180 °C (lit.)
• Boiling point: 5596 °C (lit.) 5627 °C (lit.)
• Density: 21.02 g/cm3 (lit.)
• storage temp.: Flammables area
• solubility: insoluble in HCl
• form: wire
• color: Silver-gray
• Specific Gravity: 21.04
• Water Solubility: Insoluble in water.
• Merck: 13,8261
• Exposure limits: ACGIH: TWA 1 mg/m3; OSHA: TWA 15 mg/m3; TWA 5 mg/m3
• InChIKey: WUAPFZMCVAUBPE-UHFFFAOYSA-N

Description and Uses

Small quantities of rhenium are alloyed with iron to form steel that is both hard and resistantto wear and high-temperatures. Because of its high melting point, rhenium is used inmany applications where long-wearing, high-temperature electrical components are required,such as electrical contacts and switches and high-temperature thermocouples. This physicalquality makes rhenium alloys ideal for use in rocket and missile engines. It is also used to formthe filaments in photographic flash lamps.
Rhenium’s isotope (¹⁸⁷Re) has a very long half-life and decays by both beta and alpharadiation at a very steady rate. This factor makes it useful as a standard to measure the age ofthe universe.

Safety

• Symbol(GHS): GHS05
• Signal word: Danger
• Hazard statements: H290-H314
• Precautionary statements: P234-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363
• Hazard Codes: C,F,Xi
• Risk Statements: 34-11-36/38
• Safety Statements: 16-45-36/37/39-26-33-27
• RIDADR: UN 3178 4.1/PG 2
• WGK Germany: 3
• RTECS: VI0780000
• TSCA: Yes
• HazardClass: 8
• PackingGroup: III
• HS Code: 8112993090