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Air-free technique

Index Air-free technique

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

53 relations: Abderhalden's drying pistol, Air sensitivity, Airlock, Aluminium oxide, Argon, Atmosphere of Earth, Azeotropic distillation, Benzophenone, Boston round (bottle), Calcium chloride, Cannula transfer, Carbon dioxide, Catalysis, Chemical compound, Chemical synthesis, Condenser (laboratory), Dean–Stark apparatus, Degasification, Desiccant, Distillation, Drying tube, Glass tube, Glovebox, Grignard reaction, Ground glass joint, Inert gas, Ketyl, Laboratory, Liquid nitrogen, Magnesium hydroxide, Molecular sieve, Nitrogen, Organometallics, Oxygen, Perkin triangle, Phosphine, Phosphorus pentoxide, Radical ion, Reagent, Schlenk flask, Schlenk line, Sigma-Aldrich, Silica gel, Sonication, Sparging (chemistry), Syringe, Thiol, University of Hamburg, University of Texas at Austin, University of Washington, ..., Vacuum, Volatility (chemistry), Water. Expand index (3 more) »

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.

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Air sensitivity

Air sensitivity is a term used, particularly in chemistry, to denote the reactivity of chemical compounds with some constituent of air.

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Airlock

An airlock is a device which permits the passage of people and objects between a pressure vessel and its surroundings while minimizing the change of pressure in the vessel and loss of air from it.

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Aluminium oxide

Aluminium oxide (British English) or aluminum oxide (American English) is a chemical compound of aluminium and oxygen with the chemical formula 23.

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Argon

Argon is a chemical element with symbol Ar and atomic number 18.

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Atmosphere of Earth

The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.

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Azeotropic distillation

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

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Benzophenone

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

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Boston round (bottle)

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

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Calcium chloride

Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl2.

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Cannula transfer

Cannula transfer or cannulation is a subset of air-free techniques used with a Schlenk line, in transferring liquid or solution samples between reaction vessels via cannulae, avoiding atmospheric contamination.

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Carbon dioxide

Carbon dioxide (chemical formula) is a colorless gas with a density about 60% higher than that of dry air.

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Catalysis

Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalysthttp://goldbook.iupac.org/C00876.html, which is not consumed in the catalyzed reaction and can continue to act repeatedly.

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Chemical compound

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

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Chemical synthesis

Chemical synthesis is a purposeful execution of chemical reactions to obtain a product, or several products.

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Condenser (laboratory)

A condenser is an apparatus or item of equipment used to condense (change the physical state of a substance from its gaseous to its liquid state).

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Dean–Stark apparatus

Collection vessel The 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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Degasification

Degasification is the removal of dissolved gases from liquids, especially water or aqueous solutions.

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Desiccant

A desiccant is a hygroscopic substance that induces or sustains a state of dryness (desiccation) in its vicinity; it is the opposite of a humectant.

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Distillation

Distillation is the process of separating the components or substances from a liquid mixture by selective boiling and condensation.

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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.

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Glass tube

Glass tubes are mainly cylindrical hollow-wares.

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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.

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Grignard reaction

The Grignard reaction (pronounced) is an organometallic chemical reaction in which alkyl, vinyl, or aryl-magnesium halides (Grignard reagents) add to a carbonyl group in an aldehyde or ketone.

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Ground glass joint

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

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Inert gas

An inert gas/noble gas is a gas which does not undergo chemical reactions under a set of given conditions.

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Ketyl

A ketyl group in organic chemistry is an anion radical that contains a group.

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Laboratory

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

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Liquid nitrogen

Liquid nitrogen is nitrogen in a liquid state at an extremely low temperature.

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Magnesium hydroxide

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

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Molecular sieve

A molecular sieve is a material with pores (very small holes) of uniform size.

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Nitrogen

Nitrogen is a chemical element with symbol N and atomic number 7.

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Organometallics

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

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Oxygen

Oxygen is a chemical element with symbol O and atomic number 8.

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Perkin triangle

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

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Phosphine

Phosphine (IUPAC name: phosphane) is the compound with the chemical formula PH3.

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Phosphorus pentoxide

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

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Radical ion

A radical ion is a free radical species that carries a charge.

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Reagent

A reagent is a substance or compound added to a system to cause a chemical reaction, or added to test if a reaction 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.

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Schlenk line

The Schlenk line (also vacuum gas manifold) is a commonly used chemistry apparatus developed by Wilhelm Schlenk.

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Sigma-Aldrich

Sigma-Aldrich Corporation is an American chemical, life science and biotechnology company owned by Merck KGaA.

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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.

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Sparging (chemistry)

In chemistry, sparging, also known as gas flushing in metallurgy, is a technique which involves bubbling a chemically inert gas, such as nitrogen, argon, or helium, through a liquid.

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Syringe

A syringe is a simple reciprocating pump consisting of a plunger (though in modern syringes it's actually a piston) that fits tightly within a cylindrical tube called a barrel.

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Thiol

Thiol is an organosulfur compound that contains a carbon-bonded sulfhydryl (R–SH) group (where R represents an alkyl or other organic substituent).

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University of Hamburg

The University of Hamburg (Universität Hamburg, also referred to as UHH) is a comprehensive university in Hamburg, Germany.

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University of Texas at Austin

The University of Texas at Austin (UT, UT Austin, or Texas) is a public research university and the flagship institution of the University of Texas System.

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University of Washington

The University of Washington (commonly referred to as UW, simply Washington, or informally U-Dub) is a public research university in Seattle, Washington.

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Vacuum

Vacuum is space devoid of matter.

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Volatility (chemistry)

In chemistry and physics, volatility is quantified by the tendency of a substance to vaporize.

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Water

Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.

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Redirects here:

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

References

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

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