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salts of boric acid. For the most part, borates are not salts of boric acid H3BO3 itself but of polyboric acids n B2O3m H2O, which are not isolated in a free state (for example, tetraboric acid H2B4O7 or 2B2O3 H2O). Thus, neutralization of H3BO3 by alkalis produces sodium tetraborate, or borax:

2NaOH + 4H3BO3 = Na2B4O7 + 7H2O

Salts of alkali metals constitute most of the water-soluble borates. Borates are used for softening water, as an ingredient in laundry powders, and in the glass industry. In laboratory practice, borates are used in the preparation of buffer systems and as fluxes. Lead metaborates Pb(BO2)2 are used in the production of radiation protection screens.

References in periodicals archive ?
In this study, short lengths of heavily blue stained, post-MPB lodgepole pine lumber (Pinus contorta) were treated with the buffered amine oxide carrier to borate levels less than the retentions recommended for protection against attack by the Formosan subterranean termite (average, 0.
Since his discovery of the ore and his subsequent efforts on behalf of the arts, it is interesting to note that Gerstley borate continues to be used by potters.
World production of natural and refined borates remains highly concentrated in Turkey and the USA, with Rio Tinto Minerals and Eti Mine accounting for around 75% of supply.
Under real service conditions, Dickinson and Murphy (6) found sufficient borate loading in windows after 23 years exposure to prevent decay, despite considerable paint deterioration.
Offers Firebrake ZB line of flame retardants, which are forms of zinc borate with multifunctional fire-retardant applications for plastics and rubber.
APPLICATION: Partial borate autocausticizing is an easy way for a recausticizing-limited mill to increase its capacity without new equipment.
They included metal oxides, sulfates, borates, carbonates and nitrates.
As the US detergents market moves away from chlorine-based bleaches in the future, Ros kill expects considerable growth in demand or borates in this application.
Borate buffers were prepared from boric acid, sodium dodecyl sulfate (SDS) was added, and the solution was adjusted with 500 g/L NaOH or AMP to the appropriate pH.
The expanded plant is designed to increase capacity and to use RTM's new technology, Modified Direct Dissolving of Kernite Ore (MDDK), a process which allows sodium borate and boric acid production to continue until end of mine life.
A recent evaluation of the ability of surface-applied borates to penetrate framing lumber found that diffusion can occur in wood maintained at 18 to 20 percent moisture content (Lebow et al.
Borax, one of the world's prime suppliers and refiners of borate ore, is slated to close its Valencia headquarters and relocate to Denver, where its parent company will establish its world headquarters, officials said Tuesday.