﻿ Lime (Calcium Hydroxide) for use in pH Neutralization Systems
pH Neutralization Systems by Digital Analysis Corp.
 Neutralization Chemicals   Calcium Hydroxide -Lime-   Calcium
Hydroxide Ca(OH)2  Calcium Hydroxide [Ca(OH)2]. Also commonly
referred to as slaked lime or hydrated lime; calcium hydroxide
is formed as a result of hydrating lime (calcium oxide, CaO).
Lime is by far the most economically favorable alkaline reagent
to use for acid neutralization. Lime is significantly cheaper
than caustic (NaOH), but is much more difficult to handle.  As
with magnesium hydroxide, Lime is not very soluble in water.
Although the reaction times of lime are substantially less than
magnesium hydroxide, lime is difficult to handle because it is
handled as a slurry.  Ca(OH)2 is divalent, yielding two moles of
(OH)2 for every one mole of Ca(OH)2. When compared to caustic
(NaOH), which is monovalent, twice the neutralizing power is
available for a given molar volume of lime, thus contributing to
the economy of lime. As with