White, hard, ductile, malleable metal; bluish-gray luster.
In alloy with platinum for catalysts & thermocouples, for spinnerets in rayon prodn, for glass-fiber bushings, for furnace winding, component of dental alloys, electroplating agent for bright or reflective surfaces, for electrical contacts, ingredient in gold decorations on glass & porcelain.
Registry Numbers and Inventories.
S 22 24/25
Swiss Giftliste 1
Melting point, °C
Boiling point, °C
3400 - 3700
12.41 g/cm3 (20 C)
Solubility in water
8.5E-6/K (40 C)
Heat of fusion
Hazards and Protection.
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Remove all sources of ignition.
Stable under normal temperatures and pressures.
Strong oxidizing agents, interhalogens.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Flammable solid. Extinguishing media: Use dry chemical to fight fire.
Oxides from metallic fires are a severe health hazard. Fire may produce irritating, corrosive and/or toxic gases.
TLV: ppm; 1 mg/m3 (as TWA) (ACGIH 1993-1994). OSHA PEL: TWA 0.1 mg/m3 NIOSH REL: TWA 0.1 mg/m3 NIOSH IDLH: 100 mg/m3 (as Rh)
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
May cause skin irritation.
May cause eye irritation.
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.