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Oxygen Structure

Oxygen

Product NameOxygen

CAS7782-44-7

CBNumberCB5159244

MFO2

MW32

EINECS231-956-9

MDL NumberMFCD00011434

MOL File7782-44-7.mol

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
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

Symbol(GHS)
Signal wordDanger
Hazard statements H270-H280
Precautionary statements P220-P244-P370+P376-P410+P403
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
4.5-31
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.
NFPA 704:
0
3 0
OX

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