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Osmium tetroxide suppliers
- CAS:
- 20816-12-0
- MF:
- O4Os
- MW:
- 254.23
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
- color :
- White to yellow,or lemon yellow
- Specific Gravity:
- 5.10
- 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
- crystal system:
- Monoclinic
- Space group:
- C2/c
- Lattice constant:
a/nm b/nm c/nm α/o β/o γ/o V/nm3 0.9379 0.4515 0.8632 90 116.6 90 0.3268
- 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)
SecurityInformation
- Symbol(GHS) :
-
GHS05,GHS06
- Signal word :
- Danger
- Hazard statements :
- H300+H310+H330-H314
- Precautionary statements :
- P260-P270-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
- 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
- OEB:
- E
- OEL:
- TWA: 0.002 mg/m3 (0.0002 ppm), STEL: 0.006 mg/m3 (0.0006 ppm)
- RIDADR :
- UN 3175 4.1/PG 2
- WGK Germany :
- 3
- RTECS :
- RN1140000
- TSCA :
- Yes
- 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)
PEL (OSHA)
0.0002 ppm (0.002 mg/m3)
TLV-TWA (ACGIH)
0.0002 ppm (0.002 mg/m3)
STEL (ACGIH)
0.0006 ppm (0.006 mg/m3)
- IDLA:
- 1 mg Os/m3
- Use:
- Osmium tetroxide is primarily used as a staining agent for biological samples in the process known as “fixing.” Fixing allows very small structures to be seen under a electron microscope. This compound is also in the synthesis of certain organic compounds and as an industrial catalyst and/or oxidizing agent.
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