Iron-gray powder that darkens on exposure to air.
Yttrium doped with rare earths as phosphors for color television receivers.
Registry Numbers and Inventories.
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
0.00000075 (1117 C)
4.472 g/cm3 (20 C)
Solubility in water
Heat of fusion
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
ELIMINATE all ignition sources. Do not touch or walk through spilled material. Stop leak if you can do it without risk.
DO NOT USE WATER, FOAM OR carbon dioxide. Dousing metallic fires with water may generate hydrogen gas, an extremely dangerous explosion hazard, particularly if fire is in a confined environment. Use DRY sand, graphite powder, dry sodium chloride based extinguishers, G-1 or Met-L-X powder. Confining and smothering metal fires is preferable rather than applying water.
Oxides from metallic fires are a severe health hazard. Fire may produce irritating, corrosive and/or toxic gases.
NIOSH REL*: TWA 1 mg/m3 [*Note: The REL also applies to other yttrium compounds (as Y).] OSHA PEL*: TWA 1 mg/m3 [*Note: The PEL also applies to other yttrium compounds (as Y).] IDLH 500 mg/m3 (as Y)
Substance or decomposition products may cause severe injury or death.
Seek medical assistance.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes.
Immediately flush with running water for at least 20 minutes.