Yttrium , Ingots, 99.9%metalsbasis , 7440-65-5

Synonym(s):
;Yttrium;Yttrium element;Yttrium-89

CAS NO.：7440-65-5

Empirical Formula: Y

Molecular Weight: 88.91

MDL number: MFCD00011468

EINECS: 231-174-8

PRODUCT Properties

• Melting point: 1522 °C (lit.)
• Boiling point: 3338 °C (lit.)
• Density: 4.469 g/mL at 25 °C (lit.)
• Flash point: 470℃
• storage temp.: Flammables area
• solubility: reacts with H2O; soluble in dilute acid solutions
• form: powder
• color: Gray
• Specific Gravity: 4.47
• Resistivity: 57 μΩ-cm, 20°C
• Water Solubility: Insoluble in water
• Sensitive: air sensitive, moisture sensitive
• Merck: 13,10161
• 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.

Description and Uses

Although yttrium metal by itself is not very useful, it has many unusual applicationswhen combined as an alloy or as a compound with other elements. For example, whencombined with iron, it is known as garnet (Y₃Fe₅O₁₂), which is used as a “filter” in microwave communication systems. When garnets are made with aluminum instead of iron,they form semiprecious garnet gemstones (Y₃Al₅O₁₂) that resemble diamonds. Aluminumgarnets are referred to as “YAG” solid-state lasers because they are capable of intensifyingand strengthening a single frequency of light energy that is focused through a crystal ofgarnet. This produces a very powerful narrow band of light waves of a single color (microwave frequency). YAG-type lasers have found uses in the medical industry and as a cuttingtool for metals.When combined with oxygen and europium, yttrium produces the red phosphor used asa coating in color television screens to produce the bright red color. Yttrium is also used asan alloy metal and as a high-temperature coating on iron and steel alloys. It is used as a substance to deoxidize (remove the oxygen) during the production of nonferrous metals such asvanadium. Yttrium has the ability to “capture” neutrons, making it useful in the nuclear powerindustry. It is also used in the production of several types of semiconductors.

Safety

• Symbol(GHS): GHS02
• Signal word: Warning
• Hazard statements: H228
• Precautionary statements: P210-P240-P241-P280-P370+P378
• Hazard Codes: C,Xi,Xn,F
• Risk Statements: 34-36/38-20/21/22
• Safety Statements: 26-36/37/39-45-33-27-16
• RIDADR: UN 3264 8/PG 3
• OEB: C
• OEL: TWA: 1 mg/m3 [*Note: The REL also applies to other yttrium compounds (as Y).]
• WGK Germany: 3
• RTECS: ZG2980000
• F: 1-8-10
• TSCA: Yes
• HazardClass: 8
• PackingGroup: III
• HS Code: 28053090
• IDLA: 500 mg Y/m3