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A gas or mixture of gases having, in a container an absolute pressure exceeding 40 psi at 21.1°C (70°F)


A gass or mixture having in a container, an absolute pressure exceeding 104 psi at 54.4°C (130°F) regardless of the pressure at (21.1°C (70°F)
A liquid having a vapour pressure exceeding 40 psi at 37.8°C (70°F) as determined by ASTM D-323-72.

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Eluant or eluent

The solvent used in the process of elution, as in liquid chromatography.

 

Polyprotic Acid

An Acid that can form two or more hydronium ions per molecule, often a least one step of ionization is weak.

Miscibility

The ability of one liquid to mix with (dissolve in) another liquid.

Absorption Spectrum

Spectrum associated with absorption of electromagnetic radiation by atoms (or other species) resulting from transitions from lower to higher energy states. An absorption spectrum is the inverse of an emission spectrum.

Reversible Reaction

Reactions that do not go to completion and occur in both the forward and reverse direction.

Adhesive Forces

Forces of attraction between a liquid and another surface.

Electrophile

Positively charged or electron-deficient.

Amine

Derivatives of ammonia in which one or more hydrogen atoms have been replaced by organic groups.

Ternary Compound

A compound consisting of three elements, may be ionic or covalent.

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.