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Borax (also referred to as sodium borate, tincal (/ ˈ t ɪ ŋ k əl /) and tincar (/ ˈ t ɪ ŋ k ər /)) is a salt (ionic compound), a hydrated or anhydrous borate of sodium, with the chemical formula Na 2 H 20 B 4 O 17 (also written as Na 2 B 4 O 7 ·10H 2 O [1] [a]).
Sodium perborate is manufactured by reaction of borax Na 2 B 4 O 7 and sodium hydroxide NaOH to give sodium metaborate NaBO 2, which is then reacted with hydrogen peroxide to give hydrated sodium perborate: [3] [9] Na 2 B 4 O 7 + 2 NaOH → 4 NaBO 2 + H 2 O 2 NaBO 2 + 2 H 2 O 2 → Na 2 B 2 O 4 (OH) 4. A surfactant may be added to control ...
The boric acid – borate system can be useful as a primary buffer system (substituting for the bicarbonate system with pK a 1 = 6.0 and pK a 2 = 9.4 under typical salt-water pool conditions) in pools with salt-water chlorine generators that tend to show upward drift in pH from a working range of pH 7.5–8.2.
The bead test is a traditional part of qualitative inorganic analysis to test for the presence of certain metals. The oldest one is the borax bead test or blister test. It was introduced by Berzelius in 1812. [1] Since then other salts were used as fluxing agents, such as sodium carbonate or sodium fluoride. The most important one after borax ...
Scale is one inch, ruled at one cm. The Rio Tinto Boron Mine (formerly the U.S. Borax Boron Mine) in Boron, California is California 's largest open-pit mine and the largest borax mine in the world, producing nearly half the world's borates. Ore reserves are sufficient for current economic production through early 2040's.
People are ingesting borax. Also known by its chemical name sodium borate decahydrate, borax is a salt typically used to kill ants and boost laundry detergent, among other household cleaning needs ...
Twenty-mule-team wagons on display in Death Valley, California The vehicles The carriage assembly. In 1877, six years before twenty-mule teams would be introduced into Death Valley, Scientific American reported that Francis Marion Smith and his brother had shipped their company's borax in a 30-ton load using two large wagons, with a third wagon for food and water, drawn by a 24-mule team over ...
Borax (Na 2 B 4 O 5 (OH) 4 · 8 H 2 O [2]) is a borate mineral found in evaporite deposits of alkaline lacustrine environments and as a surface efflorescence in arid regions. It is the chief mineral mined from the deposits at Boron, California and nearby locations, and is the chief source of commercial borax .