Compound: oxygen
SMILES: O=O
InChIKey: MYMOFIZGZYHOMD-UHFFFAOYSA-N
Synonyms: oxygen, Molecular oxygen, oxygen molecule, Dioxygen, 7782-44-7, Pure oxygen, Oxygenium, Liquid oxygen, Oxygen-16, Oxygen, liquified, Compressed oxygen, Oxygen, compressed, INS NO.948, DTXSID2037681, INS-948, E-948, S88TT14065, E948, RNS60 COMPONENT OXYGEN, RNS-60 COMPONENT OXYGEN, CHEBI:15379, Oxygen 16, OXYGEN GAS, oxidanone, Air Compressed, reconstituted Air, Oxygen Compressed, Nitrogen, Oxygen, Oxygen Size B, Oxygen Size C, Oxygen Size D, Oxygen Size E, Oxygen Size F, Oxygen Size H, Oxygen Size M, Oxygen Size T, Helium/Oxygen Mix, Oxygen, USP, G02 Therapy, Ez-OX Plus, Nitrogen Oxygen Mix, Oxygen Size 400, Oxygen, Refrigerated, Focus Medical Oxygen, Oxygen-helium Mixture, Carbon Dioxide Oxygen, Oxygen Compressed Gas, Oxygen Helium Mixture, Ez-OX, Hyperbaric Chamber Mix, Vet O2, Oxygen Nitrogen Mixture, Oxygen, Compressed Gas, Oxygen-nitrogen Mixture, RefChem:6665, 0XYGEN, OXYGEN, NITROGEN, Oxygen/Nitrogen 5/95, Oxygen/Helium 20/80, Oxygen/Helium 25/75, Oxygen/Helium 30/70, Oxygen/Helium 40/60, Oxygen/Helium 50/50, Medical Oxygen Compressed, Oxygen Compressed U.S.P, Oxygen/Nitrogen 10/90, Oxygen/Nitrogen 12/88, Oxygen/Nitrogen 15/85, Oxygen/Nitrogen 21/79, Oxygen/Nitrogen 25/75, Oxygen/Nitrogen 26/74, Oxygen/Nitrogen 30/70, Oxygen/Nitrogen 38/62, Oxygen/Nitrogen 40/60, Oxygen/Nitrogen 50/50, Oxygen/Nitrogen 52/48, Oxygen/Nitrogen 75/25, Carbon Dioxide Oxygen Mix, Carbon Dioxide/Oxygen Mix, Oxygen Refrigerated Liquid, 40% Oxygen/Nitrogen Mix, Air Compressed Medical Air, Oxygen, Refrigerated Liquid, Oxygen, Compressed U.S.P., NINA WATER (Rich anions), Carbon Dioxide/Oxygen 5/95, Oxygen/Nitrogen 9.7/90.3, Helium/Oxygen Mixture 70/30, Helium/Oxygen Mixture 80/20, Oxygen Helium Mixture 20/80, Oxygen Helium Mixture 30/70, Oxygen Helium Mixture 40/60, Oxygen 64889-0001, DTXCID0017681, Medical Gasseous Oxygen Cylinders, Oxygen Refrigerated Liquid U.S.P, Southern Medical Oxygen, Compressed, Carbon Dioxide Oxygen Mixture 5/95, Oxygen Compressed UN 1072 Refrigerated UN 1073, Oxygen 4c21e554-d402-480d-896d-8185c05c7863, 231-956-9, CHEBI:25805, O, Oxygen Carbon Dioxide, Sauerstoff, Oxygen (liquid), Oxygenium medicinale, oxygene, CCRIS 1228, HSDB 5054, O2, UN1072, UN1073, LOX, Oxygen-17O2, Oxygene [French], Oxigeno [Spanish], OXY, Oxygen in copper, O 40 mm x 30 mm, Oxygen [USP], EINECS 231-956-9, dioxidanediyl, dioxygene, Disauerstoff, oxygen monoxide, singlet dioxygen, triplet dioxygen, UNII-S88TT14065, Oxygen USP, Oxygen 93 percent, singlet molecular oxygen, triplet molecular oxygen, Oxygen (8CI,9CI), OXYGEN [VANDF], OXYGEN [HSDB], OXYGEN [JAN], Oxygen (JP18/USP), OXYGEN [WHO-DD], OXYGEN [WHO-IP], OXYGEN [MI], dioxygen(2.) (triplet), OXYGEN [MART.], SCHEMBL821, Oxygen, >=99.6%, OXYGEN [GREEN BOOK], Oxygen, compressed [UN1072] [Nonflammable gas], OXYGEN [EP MONOGRAPH], OXYGEN [USP MONOGRAPH], [OO], Oxygen, >=99.998%, CHEMBL1234886, CHEBI:26689, CHEBI:27140, OXYGENIUM [WHO-IP LATIN], OXYGEN COMPONENT OF RNS60, OXYGEN COMPONENT OF RNS-60, Oxygen, refrigerated liquid (cryogenic liquid) [UN1073] [Nonflammable gas], DB09140, UN 1072, UN 1073, Oxygen, Messer(R) CANGas, 99.999%, DS-014940, (1)O2, E 948, NS00076229, C00007, D00003, O2(2.), Oxygen, refrigerated liquid (cryogenic liquid), Oxygen, compressed [UN1072]  [Nonflammable gas], (O2)(..), (O2)(2.), Q5203615, AQUANAL(TM)-plus oxygen (O2) 1-12 mg/L, refill pack for 37428, AQUANAL(TM)-plus oxygen (O2) 1-12 mg/L, test set with color comparator, 4-Chloro-3-(chloro-difluoro-methyl)-4,4-difluoro-1-thiophen-2-yl-but-2-en-2-one, Oxygen, refrigerated liquid (cryogenic liquid) [UN1073]  [Nonflammable gas]
Theoretical properties:
molecular_formula: O2
molecular_weight: 31.999 g/mol
exact_mass: 31.989829239 g/mol
formal_charge: 0
hydrogen_bond_donor_count: 0
hydrogen_bond_acceptor_count: 2
rotatable_bond_count: 0
heavy_atom_count: 2
topological_polar_surface_area: 34.1 Å²
isotope_atom_count: 0
covalently_bonded_unit_count: 1
Physical properties:
physical_state: Colorless gas
color: Colorless gas
odor: Odorless
boiling_point: -297.3 °F at 760 mmHg (USCG, 1999)
melting_point: -361 °F (USCG, 1999)
density: 1.14 at -297.4 °F (USCG, 1999) - Denser than water; will sink
solubility: 39mg/L
vapor_pressure: 1 kPa at -211.9 °C; 10 kPa at -200.5 °C; 100 kPa at -183.1 °C
Descriptions:
{"pubchem": "Dioxygen is a gas molecular entity, an elemental molecule and a diatomic oxygen. It has a role as a micronutrient, a nutrient, a reagent, an anti-inflammatory drug, an oxidising agent, a Saccharomyces cerevisiae metabolite, a human metabolite and a member of food packaging gas. It is a conjugate base of a hydridodioxygen(1+).", "chebi": null, "chembl": "OXYGEN is a small molecule listed in the ChEMBL database and has reached clinical trial phase 4.0.", "wikipedia": "Oxygen is a chemical element; it has the symbol O and its atomic number is 8. It is a member of the chalcogen group in the periodic table. It is highly reactive, a nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is the most abundant element in Earth's crust, making up almost half of the Earth's crust in the form of various oxides such as water, carbon dioxide, iron oxides, and silicates. It is also the third-most abundant element in the universe after hydrogen and helium.\nAt standard temperature and pressure, two oxygen atoms will bind covalently to form dioxygen, a colorless and odorless diatomic gas with the chemical formula O2. Dioxygen gas currently constitutes approximately 20.95% molar fraction of the Earth's atmosphere, though this has changed considerably over long periods of time in Earth's history. The much rarer allotrope of oxygen, ozone (O3), strongly absorbs the UVB and UVC wavelengths and forms a protective ozone layer at the lower stratosphere, which shields the biosphere from ionizing ultraviolet radiation. However, ozone present at the surface is a corrosive byproduct of smog and thus an air pollutant.\nAll eukaryotic organisms, including plants, animals, fungi, algae, and most protists, need oxygen for cellular respiration, a process that extracts chemical energy by the reaction of oxygen with organic molecules derived from food and releases carbon dioxide as a waste product. \nMany major classes of organic molecules in living organisms contain oxygen atoms, such as proteins, nucleic acids, carbohydrates, and fats, as do the major constituent inorganic compounds of animal shells, teeth, and bone. Most of the mass of living organisms is oxygen as a component of water, the major constituent of lifeforms. Oxygen in Earth's atmosphere is produced by biotic photosynthesis, in which photon energy in sunlight is captured by chlorophyll to split water molecules and then react with carbon dioxide to produce carbohydrates, with oxygen released as a byproduct. Oxygen is too chemically reactive to remain a free element in air without being continuously replenished by the photosynthetic activities of autotrophs such as cyanobacteria, chloroplast-bearing algae, and land plants.\nOxygen was isolated by Michael Sendivogius before 1604, but it is commonly believed that the element was discovered independently by Carl Wilhelm Scheele, in Uppsala, in 1773 or earlier, and Joseph Priestley in Wiltshire, in 1774. Priority is often given for Priestley because his work was published first. Priestley, however, called oxygen \"dephlogisticated air\", and did not recognize it as a chemical element. In 1777, Antoine Lavoisier first recognized oxygen as a chemical element and correctly characterized the role it plays in combustion.\nCommon industrial uses of oxygen include production of steel, plastics and textiles, brazing, welding and cutting of steels and other metals, rocket propellant, oxygen therapy, and life-support systems in aircraft, submarines, spaceflight, and diving."}