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Air-free technique, the Glossary

Air-free techniques refer to a range of manipulations in the chemistry laboratory for the handling of compounds that are air-sensitive.^[1]

56 relations: Abderhalden's drying pistol, Air sensitivity, Airlock, Aluminium oxide, Angstrom, Argon, Atmosphere of Earth, Azeotropic distillation, Benzophenone, Boston round (bottle), Calcium chloride, Cannula transfer, Carbon dioxide, Chemical compound, Chemical synthesis, Condenser (laboratory), Dean–Stark apparatus, Degassing, Desiccant, Distillation, Drying tube, Glass tube, Glovebox, Grignard reagent, Ground glass joint, Inert gas, Ketyl, Laboratory, Liquid nitrogen, Magnesium hydroxide, Molecular sieve, Nitrogen, Organometallics, Organophosphine, Oxygen, Parts-per notation, Perkin triangle, Phosphorus pentoxide, Radical anion, Reagent, Schlenk flask, Schlenk line, Schlenk-frit, Sigma-Aldrich, Silica gel, Sonication, Sparging (chemistry), Syringe, Thiol, Titanocene dichloride, ... Expand index (6 more) »
Air-free techniques

Abderhalden's drying pistol

Abderhalden's drying pistol is a piece of laboratory glassware used to free samples from traces of water, or other impurities.

See Air-free technique and Abderhalden's drying pistol

Air sensitivity

Air sensitivity is a term used, particularly in chemistry, to denote the reactivity of chemical compounds with some constituent of air. Air-free technique and air sensitivity are air-free techniques.

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An airlock is a room or compartment which permits passage between environments of differing atmospheric pressure or composition, while minimizing the changing of pressure or composition between the differing environments.

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Aluminium oxide

Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula.

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Angstrom

The angstrom is a unit of length equal to m; that is, one ten-billionth of a metre, a hundred-millionth of a centimetre, 0.1 nanometre, or 100 picometres.

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Argon

Argon is a chemical element; it has symbol Ar and atomic number 18.

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Atmosphere of Earth

The atmosphere of Earth is composed of a layer of gas mixture that surrounds the Earth's planetary surface (both lands and oceans), known collectively as air, with variable quantities of suspended aerosols and particulates (which create weather features such as clouds and hazes), all retained by Earth's gravity.

See Air-free technique and Atmosphere of Earth

Azeotropic distillation

In chemistry, azeotropic distillation is any of a range of techniques used to break an azeotrope in distillation.

See Air-free technique and Azeotropic distillation

Benzophenone

Benzophenone is a naturally occurring organic compound with the formula (C6H5)2CO, generally abbreviated Ph2CO.

See Air-free technique and Benzophenone

Boston round (bottle)

A Boston round bottle, or Winchester bottle, is a strong, heavy bottle commonly used in the drug and chemical industries.

See Air-free technique and Boston round (bottle)

Calcium chloride

Calcium chloride is an inorganic compound, a salt with the chemical formula.

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Cannula transfer

Cannula transfer or cannulation is a set of air-free techniques used with a Schlenk line, in transferring liquid or solution samples between reaction vessels via cannulae, avoiding atmospheric contamination. Air-free technique and cannula transfer are air-free techniques and laboratory techniques.

See Air-free technique and Cannula transfer

Carbon dioxide

Carbon dioxide is a chemical compound with the chemical formula.

See Air-free technique and Carbon dioxide

Chemical compound

A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds.

See Air-free technique and Chemical compound

Chemical synthesis

Chemical synthesis (chemical combination) is the artificial execution of chemical reactions to obtain one or several products.

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Condenser (laboratory)

In chemistry, a condenser is laboratory apparatus used to condense vaporsthat is, turn them into liquidsby cooling them down.

See Air-free technique and Condenser (laboratory)

Dean–Stark apparatus

Collection vessel The Marcusson apparatus, Dean-Stark apparatus, Dean–Stark receiver, distilling trap, or Dean–Stark Head is a piece of laboratory glassware used in synthetic chemistry to collect water (or occasionally other liquid) from a reactor.

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Degassing

Degassing, also known as degasification, is the removal of dissolved gases from liquids, especially water or aqueous solutions. Air-free technique and Degassing are laboratory techniques.

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Desiccant

A desiccant is a hygroscopic substance that is used to induce or sustain a state of dryness (desiccation) in its vicinity; it is the opposite of a humectant.

See Air-free technique and Desiccant

Distillation

Distillation, also classical distillation, is the process of separating the component substances of a liquid mixture of two or more chemically discrete substances; the separation process is realized by way of the selective boiling of the mixture and the condensation of the vapors in a still. Air-free technique and distillation are laboratory techniques.

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Drying tube

A drying tube or guard tube is a tube-like piece of apparatus used to house a disposable solid desiccant, wherein at one end the tube-like structure terminates in a ground glass joint for use in connecting the drying tube to a reaction vessel, for the purpose of keeping the vessel free of moisture.

See Air-free technique and Drying tube

Glass tube

Glass tubes are mainly cylindrical hollow-wares.

See Air-free technique and Glass tube

Glovebox

A glovebox (or glove box) is a sealed container that is designed to allow one to manipulate objects where a separate atmosphere is desired. Air-free technique and glovebox are air-free techniques.

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Grignard reagent

Grignard reagents or Grignard compounds are chemical compounds with the general formula, where X is a halogen and R is an organic group, normally an alkyl or aryl.

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Ground glass joint

Ground glass joints are used in laboratories to quickly and easily fit leak-tight apparatus together from interchangeable commonly available parts.

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Inert gas

An inert gas is a gas that does not readily undergo chemical reactions with other chemical substances and therefore does not readily form chemical compounds.

See Air-free technique and Inert gas

Ketyl

A ketyl group in organic chemistry is an anion radical that contains a group R2C−O•.

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Laboratory

A laboratory (colloquially lab) is a facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed.

See Air-free technique and Laboratory

Liquid nitrogen

Liquid nitrogen (LN2) is nitrogen in a liquid state at low temperature.

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Magnesium hydroxide

Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)2.

See Air-free technique and Magnesium hydroxide

Molecular sieve

A molecular sieve is a material with pores of uniform size.

See Air-free technique and Molecular sieve

Nitrogen

Nitrogen is a chemical element; it has symbol N and atomic number 7.

See Air-free technique and Nitrogen

Organometallics is a biweekly journal published by the American Chemical Society.

See Air-free technique and Organometallics

Organophosphine

Organophosphines are organophosphorus compounds with the formula PRnH3−n, where R is an organic substituent.

See Air-free technique and Organophosphine

Oxygen

Oxygen is a chemical element; it has symbol O and atomic number 8.

See Air-free technique and Oxygen

Parts-per notation

In science and engineering, the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction.

See Air-free technique and Parts-per notation

Perkin triangle

A Perkin triangle is a specialized apparatus for the distillation of air-sensitive materials.

See Air-free technique and Perkin triangle

Phosphorus pentoxide

Phosphorus pentoxide is a chemical compound with molecular formula P4O10 (with its common name derived from its empirical formula, P2O5).

See Air-free technique and Phosphorus pentoxide

Radical anion

In organic chemistry, a radical anion is a free radical species that carries a negative charge.

See Air-free technique and Radical anion

Reagent

In chemistry, a reagent or analytical reagent is a substance or compound added to a system to cause a chemical reaction, or test if one occurs.

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Schlenk flask

A Schlenk flask, or Schlenk tube, is a reaction vessel typically used in air-sensitive chemistry, invented by Wilhelm Schlenk. Air-free technique and Schlenk flask are air-free techniques.

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Schlenk line

The Schlenk line (also vacuum gas manifold) is a commonly used chemistry apparatus developed by Wilhelm Schlenk. Air-free technique and Schlenk line are air-free techniques.

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Schlenk-frit

A Schlenk-frit is a laboratory filtration device operating under inert gas conditions (schlenk conditions).

See Air-free technique and Schlenk-frit

Sigma-Aldrich

Sigma-Aldrich (formally MilliporeSigma) is an American chemical, life science, and biotechnology company owned by the multinational chemical conglomerate Merck Group Sigma-Aldrich was created in 1975 by the merger of Sigma Chemical Company and Aldrich Chemical Company.

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Silica gel

Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores.

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Sonication

A sonicator at the Weizmann Institute of Science during sonicationSonication is the act of applying sound energy to agitate particles in a sample, for various purposes such as the extraction of multiple compounds from plants, microalgae and seaweeds. Air-free technique and sonication are laboratory techniques.

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Sparging (chemistry)

In chemistry, sparging, also known as gas flushing in metallurgy, is a technique in which a gas is bubbled through a liquid in order to remove other dissolved gas(es) and/or dissolved volatile liquid(s) from that liquid. Air-free technique and sparging (chemistry) are laboratory techniques.

See Air-free technique and Sparging (chemistry)

References

[1] https://en.wikipedia.org/wiki/Air-free_technique

Also known as Air-free conditions, Air-free techniques, Airfree, Inert atmosphere technique, Schlenk technique.

, University of Hamburg, University of Texas at Austin, University of Washington, Vacuum, Volatility (chemistry), Water.

Air-free technique, the Glossary

Table of Contents

See also

Air-free techniques

References