Oxygen manufacturers and suppliers

Oxygen suppliers

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.

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