White to off-white solid.
Registry Numbers and Inventories.
EC Index Number
toxic, dangerous for the environment
R 23/25 33 50/53
S 20/21 28 45 60 61
Melting point, °C
186 - 189
Solubility in water
Hazards and Protection.
Store in a cool, dry place. Store in a tightly closed container.
Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron.
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Vacuum or sweep up material and place into a suitable disposal container.
Strong oxidizing agents.
Carbon monoxide, carbon dioxide, selenium/selenium oxides.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Contact with metals may evolve flammable hydrogen gas.
Fire may produce irritating, corrosive and/or toxic gases.
Poison by ingestion. The toxicological properties of this substance have not been fully investigated.
Toxic if inhaled.
May cause skin irritation.
May cause eye irritation.
Get medical aid immediately. Wash mouth out with water.
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
I; II; III
2931 00 95