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Osmium tetroxide

Product NameOsmium tetroxide





MOL File20816-12-0.mol

Chemical Properties

Melting point 40°C
Boiling point 130 °C
Density  1.04
vapor density  8.8 (vs air)
vapor pressure  7 mmHg at 20 °C
Flash point -40 °C
storage temp.  2-8°C
solubility  Soluble in alcohol, ether, chloroform, benzene, ammonium hydroxide, phosphorus oxychloride and carbon tetrachloride
form  Solution
Specific Gravity 5.10
color  White to yellow,or lemon yellow
Odor Acrid, chlorine-like odor detectable at 2 ppm (20 mg/m3)
Water Solubility  Soluble in chloroform, alcohol and ethers.Soluble in water, organic solvents, benzene, alcohol, ether, ammonium hydroxide, phosphorus oxychloride and carbon tetrachloride.
Sensitive  Air Sensitive
Merck  14,6893
Stability Stable. Incompatible with strong acids, hydrogen chloride, organic materials, finely powdered metals.
CAS DataBase Reference 20816-12-0(CAS DataBase Reference)
NIST Chemistry Reference Osmium tetraoxide(20816-12-0)
EPA Substance Registry System Osmium tetroxide (20816-12-0)

Safety Information

Hazard Codes  O,T,C,T+,F,Xi,Xn
Risk Statements  8-23/24/25-40-34-26/27/28-42/43-11-67-66-36/37/38-19-36/38-36/37
Safety Statements  17-26-27-36/37/39-45-7/9-36/37-16-28-23
RIDADR  UN 3175 4.1/PG 2
WGK Germany  3
RTECS  RN1140000
HazardClass  6.1
PackingGroup  I
HS Code  28439090
Hazardous Substances Data 20816-12-0(Hazardous Substances Data)
Toxicity LD50 oral (rat)
14 mg/kg
LCLO inhal (rat)
40 ppm (4 h)
0.0002 ppm (0.002 mg/m3)
0.0002 ppm (0.002 mg/m3)
0.0006 ppm (0.006 mg/m3)
IDLA 1 mg Os/m3


Usage And Synthesis

Preparation Products And Raw materials

Osmium tetroxide Supplier