Osmium

Formula
Os
Structure
Description
Blue-gray metal.

Registry Numbers and Inventories.
CAS
7440-04-2
EC (EINECS/ELINCS)
231-114-0
11 37/38 41
16 26 36/37/39
RTECS
RN1100000
RTECS class
Other
UN (DOT)
3089
Merck
13,6960
Beilstein/Gmelin
16234 (G)
Swiss Giftliste 1
G-9577
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
Os
Formula mass
190.23
Melting point, °C
3027
Boiling point, °C
4450
Density
19.13 g/cm3 (25 C)
Solubility in water
Insoluble
Thermal expansion
6.4E-6/K

Hazards and Protection.
Storage
Keep tightly closed. Keep away from heat, sparks, and open flame. Store in a cool dry place.
Protection
Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Incompatibilities
Oxygen, Halogens, Phosphorus.
Decomposition
Nature of decomposition products not known.

Fire.
Fire fighting
Extinguish using Dry chemical powder. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Hazards
Flammable solid. Emits toxic fumes under fire conditions.
Health
-
 
Flammability
4
 
 
Reactivity
1
 

Health.
Poison_Class
1
Exposure effects
Irritant. Risk of serious damage to eyes.
   Ingestion
See Inhalation.
   Inhalation
Substance or decomposition products may cause severe injury or death.
   Skin
Causes skin irritation.
   Eyes
Causes severe eye irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water.
   Eyes
Contamination of the eyes should be treated by immediate and prolonged irrigation with copious amounts of water.

Transport.
UN number
3089
Response guide
Hazard class
4.1
Packing Group
II