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Oxygen

Oxygen structure

CAS No:
7782-44-7
Formula:
O2
Chemical Name:
Oxygen
Synonyms:
Oxygen;Oxygen molecule;Molecular oxygen;Dioxygen;Phoenix I 2 A 7;Oxygen gas;Medicinal Oxygen;1338-93-8;14797-70-7;80217-98-7;80937-33-3;1053656-93-1;1173018-52-4;1397194-37-4
Categories:
Cosmetic Ingredient > Skin Conditioning

Description

Oxygen, O2, is a colorless, tasteless, gaseous element essential to almost all forms of life. It promotes respiration and combustion. Oxygen comprises 20% of the earth's atmosphere and is the most abundant element in seawater and in the earth's crust. It is slightly soluble in water and alcohol, but combines readily with most other elements to form oxides. The electrolysis of water produces both oxygen and hydrogen.

Oxygen Basic Attributes

Molecular Weight：

Exact Mass：

32.00

EC Number：

231-956-9

HScode：

2804400000

Characteristics

PSA：

34.14000

XLogP3：

0.06700

Appearance：

Oxygen is a colorless, odorless and tasteless gas. It will support life. It is noncombustible, but will actively support the burning of combustible materials. Some materials that will not burn in air will burn in oxygen. Materials that burn in air will burn more vigorously in oxygen. As a non-liquid gas it is shipped at pressures of 2000 psig or above. Pure oxygen is nonflammable. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket. Oxygen is used in the production of synthesis gas from coal, for resuscitation and as an inhalant.

Density：

3.419 g/cm³

Melting Point：

-218.4 °C

Boiling Point：

-182.96 °C

Flash Point：

none

Refractive Index：

1.776

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]

Storage Conditions：

-20°C

Vapor Pressure：

>760 mmHg at 20 °C

Vapor Density：

1.11 (vs air)

Toxicity：

Inhalation-Human TCL0: 100000 PPM/14 hours

Flammability characteristics：

Support combustion; prevent burns

Explosive limit：

Strong oxidizer ... May initiate fire/explosion in combustible materials ... A leak of liquid oxygen onto combustible material represents a severe explosion potential ... /Oxygen, liquid/

Odor：

Odorless

Taste：

Tasteless

Safety Information

Hazard category：

2.2

Transport codes：

UN 1072 2.2

wgk germany：

hazard class code：

8-52/53-34-48/20/22-37

safety instructions：

17-45-36/37/39-26-61

RTECS Number：

RS2060000

Marks：

O,C

Storage features：

The warehouse is ventilated, low temperature and dry; stored separately from reducing agents and combustibles

Explosive characteristics：

Explosive when mixed with organic matter

Stability/Shelf Life：

Stable. Vigorously supports combustion. Incompatible with phosphorus, organic materials, many powdered metals.

Precautionary statement(s)：

P220, P244, P370+P376, P403

Hazard Statements：

H270

Toxicity

Toxicity class：

practically nontoxic

Oxygen Use and Manufacturing

Methods of Manufacturing

The air separation method first removes the air after dust and mechanical impurities and compresses it in the compressor. Remove carbon dioxide from compressed air. The dried compressed air is liquefied, rectified, and separated into oxygen and nitrogen. The oxygen is stored in an oxygen cabinet, the liquid oxygen is sent to the storage tank, and the compressed oxygen is filled in the oxygen bottle. Water electrolysis Water is fed with direct current in an electrolysis cell, and the water is decomposed into oxygen and hydrogen. This method can produce pure hydrogen and by-product oxygen.

Uses

In oxyhydrogen or oxyacetylene flame for welding metals and for lighting (calcium light, etc); submarine work by divers, propellant for rockets.In the production of synthesis gas which can be used in the Fischer-Tropsch process for liquid fuels.

Computed Properties

Molecular Weight:31.999
XLogP3:-1.1
Hydrogen Bond Acceptor Count:2
Exact Mass:31.989829239
Monoisotopic Mass:31.989829239
Topological Polar Surface Area:34.1
Heavy Atom Count:2
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Price Analysis

Make your Oxygen purchase based on the price and market insights! ECHEMI provides professional market insights with prices for you to make a better choice. Learn more on Oxygen prices .

Drug Function and Efficacy

Extract from the above information

This ingredient has been used in drugs with the following functions (note: it does not mean that the ingredient itself has the following health functions)

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Registered Holders

Linde Meishan(Nanjing) Gas Co., Ltd.

China
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Linde (Beijing) Semiconductor Gas Co., Ltd.

China
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Jiangsu Industrial Gases Co., Ltd.

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