Colorless orthorhombic crystals. Odorless.
In vacuum tubes, fluorescent screens, electrolyte in weston std cell.
Registry Numbers and Inventories.
EC Index Number
Carcinogenic Category 2; Toxic; Harmful; Dangerous for the Environment
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Vapor density (air=1)
Odor Threshold Odor threshold Odorless
4.7 g/cm3 (20 C)
Solubility in water
Heat of fusion
Hazards and Protection.
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Wash hands before eating. Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation. Wash clothing before reuse.
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 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.
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Stable at room temperature in closed containers under normal storage and handling conditions.
Violently reacts with magnesium and with aluminum powder when heated.
Oxides of sulfur, irritating and toxic fumes and gases, toxic cadmium oxide fumes.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Substance is noncombustible. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Contact with metals may evolve flammable hydrogen gas.
Toxic cadmium oxide fume may form in fires.
NIOSH REL*: Ca See Appendix A [*Note: The REL applies to all Cd compounds (as Cd).] OSHA PEL*: [1910.1027] TWA 0.005 mg/m3 *Note: The PEL applies to all Cd compounds (as Cd).] IDLH Ca [9 mg/m3 (as Cd)]
O, G-A2, I-1, N-1, CP65
May cause respiratory tract cancer. Prolonged or repeated exposure may cause permanent bone structure abnormalities. May cause liver and kidney damage. May cause anemia and other blood cell abnormalities. Chronic inhalation may cause pulmonary emphysema.
Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause unconsciousness.
Effects may be delayed. Causes respiratory tract irritation. Irritation may lead to chemical pneumonitis and pulmonary edema. May cause dyspnea (difficult breathing from shortness of breath). Damage may be delayed. May cause anemia. May cause cough, chest pain, fever, muscular cramps, and headache.
Causes skin irritation.
Causes eye irritation.
Induce vomiting. 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 immediately.
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
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.
I; II; III
USCG CHRIS Code