Basic information Safety Related Supplier
Oxygen Structure


Chemical Properties

Melting point −218 °C(lit.)
Boiling point −183 °C(lit.)
Density  1.429(0℃)
vapor density  1.11 (vs air)
vapor pressure  >760 mmHg at 20 °C
storage temp.  -20°C
solubility  At 20 °C and at a pressure of 101 kPa, 1 volume dissolves in about 32 volumes of water.
form  colorless gas
color  Colorless gas, liquid, or hexagonal crystals
Odor Odorless gas
Water Solubility  one vol gas dissolves in 32 volumes H2O (20°C), in 7 volumes alcohol (20°C); soluble other organic liq, usually higher solubility than in H2O [MER06]
Merck  13,7033
Dielectric constant 1.5(-193℃)
Stability Stable. Vigorously supports combustion. Incompatible with phosphorus, organic materials, many powdered metals.
CAS DataBase Reference 7782-44-7(CAS DataBase Reference)
NIST Chemistry Reference Oxygen(7782-44-7)
EPA Substance Registry System Oxygen (7782-44-7)

Safety Information

Hazard Codes  O,C
Risk Statements  8-52/53-34-48/20/22-37
Safety Statements  17-45-36/37/39-26-61
RIDADR  UN 1072 2.2
WGK Germany  -
RTECS  RS2060000
HazardClass  2.2
Hazardous Substances Data 7782-44-7(Hazardous Substances Data)
Toxicity OSHA recommends a minimum oxygen concentration of 19.5% for human occupancy.


Usage And Synthesis

Oxygen Supplier

Oxygen manufacturers

Question and answer