Oxygen
Oxygen
- CAS:
- 7782-44-7
- MF:
- O2
- MW:
- 32
Suppliers by country/region
Company Type
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.
Safety Information
- Symbol(GHS)
GHS03,GHS04
- Signal word
- Danger
- 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
- F
- 4.5-31
- HazardClass
- 2.2
- Toxicity
- OSHA recommends a minimum oxygen concentration of 19.5% for human occupancy.
Use
There are three allotropes (different forms) of oxygen: (1) atomic oxygen (O), sometimesreferred to as nascent or “newborn” oxygen; (2) diatomic oxygen (O2), or molecular oxygen(gas); and (3) ozone (O3), also a gas.The atmospheric oxygen that we breathe is a very reactive nonmetal and is colorless, odorless,and tasteless, but it is essential to all living organisms. It readily forms compounds withmost other elements. With six electrons in its outer valence shell, it easily gains two moreelectrons to form a negative (–2) ion; or as covalent, it can share electrons with other elementsto complete its outer shell.Almost all the oxygen in the atmosphere (?21%) is the allotropic form of molecular oxygen(O2). This essential gas we breathe is the result of photosynthesis, which is how green plants(with chlorophyll) use the energy of the sun to convert carbon dioxide (CO2) and water tostarches and sugars with molecular oxygen as the by-product.Liquid oxygen has a slightly bluish cast to it. As it boils, pure oxygen gas is released. Themelting point for oxygen is –218.79°C, its boiling point is –182.95°C, and its density is0.001429 g/cm3.
8 India supplier list of "Oxygen"
![](/images/pro-3.jpg)
- Product Name:Oxygen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: Gujarat,INDIA
![](/images/pro-3.jpg)
- Product Name:Oxygen
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: New Delhi,INDIA
![](/images/pro-3.jpg)
- Product Name:Oxygen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA
![](/images/pro-3.jpg)
- Product Name:Oxygen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA
![](/images/pro-3.jpg)
- Product Name:Oxygen
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA
![](/images/pro-3.jpg)
- Product Name:Oxygen
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Karnataka,INDIA
![](/images/pro-3.jpg)
- Product Name:Anti-LOXantibodyproducedinrabbit
- Products Intro:Brand:sigma aldrich | Product Number:HPA043930 | Purity:PrestigeAntibodies?PoweredbyAtlasAntibodies,affinityisolatedantibody
- Company Type: Trader
- Country/Region: Bangalore,INDIA
![](/images/pro-3.jpg)
- Product Name:Oxygen Gas
- Company Type: Reagent
- Country/Region: Karnataka,INDIA