Borates

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Borates

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 ?

The study of the composition and concentration dependence of the low-frequency light scattering spectra of the borate glasses [13, 14] has shown that both the type of the alkali metal cation and the concentration of modifier oxide strongly affect the spectral properties of the Boson peak (intensity and Boson peak position) (see, e.g., Fig.

Boson Peak and Superstructural Groups in [Na.sub.2]O-[B.sub.2][O.sub.3] Glasses

Another approach to providing sufficient borate to a bridge timber is to drill holes in the member before treatment and fill the holes with solid or powdered preservative.

Estimating the impacts of preservative ports on bridge tie strength

It also attracts interest as model compound for the preparation of poly(methylenetriphenyl borates).

Characterization and Exergy Analysis of Triphenyl Borate

The synthesis procedure of magnesium borates is given in Figure 1.

Characterization and thermal dehydration kinetics of highly crystalline mcallisterite, synthesized at low temperatures

The samples of potassium borate and Cu-doped potassium borate glass were prepared by a melt quenching technique.

Dopant concentration and effective atomic number of copper-doped potassium borate glasses

Zinc borates are also known for their flame-retarding properties.

Effect of magnesium borates on the fire-retarding properties of zinc borates

Previous laboratory tests have shown that without borate the chemicals available on the early Earth fail to build ribose.

Martian clay contains chemical implicated in origin of life

James Mack Gerstley, a mining executive, founded the mine in 1923; the local people then called the mine Gerstley's borate. Gerstley's company, Pacific Coast Borax, merged with US Potash Company, which became US Borax and Chemical Company.

A substitute for Gerstley borate: Jonathan Kaplan and Jeff Zamek collaborate on their research

(8) Winters, F.T., "Determination of Borates in Wood--A Simplified Analysis for Plant Operations," Unpublished bulletin, United States Borax and Chemical Corp., Los Angeles CA., ca.

Ability of transparent coatings to retard leaching of borates in a Weather-Ometer[R] test

Charmax flame retardants and smoke suppressants include proprietary Charmax LS complexes used in low-smoke polymer compositions for wire and cable, Charmax FRs used as antimony oxide replacements, an ultrafine ammonium octamolybdate, zinc staunates, and zinc borates for halogenated and nonhalogenated polymers.

Flame retardants

Among their topics are the combined fire retardant action of phosphonated structures and clay dispersion in epoxy resin, borates as fire retardants in halogen-free polymers, fire-resistant flexible foams, and smoke toxicity in automotive materials.