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However, the term may be applied also to the related compounds. Borax "pentahydrate" has the formula Na 2 B 4 O 7 ·5H 2 O, which is actually a trihydrate Na 2 B 4 O 5 (OH) 4 ·3H 2 O. It is a colorless solid with a density of 1.880 kg/m 3 that crystallizes from water solutions above 60.8 °C in the rhombohedral crystal system.
Sodium borates, as well as boroxy acids, are often described as mixtures xNa 2 O·yB 2 O 3 ·zH 2 O = Na 2x B 2y H 2z O x+3y+z, with x, y, and z chosen to fit the elemental formula, or a multiple thereof. Thus, for example, borax Na 2 B 4 H 20 O 17 would be 1Na 2 O·2B 2 O 3 ·10H 2 O, and boric acid B(OH) 3 would be 0Na 2 O·1B 2 O 3 ·1H 2 O ...
The hydrated tetraborate anion occurs in the mineral borax (sodium tetraborate octahydrate) with the formula Na 2 [B 4 O 5 (OH) 4]·8H 2 O. The borax chemical formula is also commonly written in a more compact notation as Na 2 B 4 O 7 ·10H 2 O. Sodium borate can be obtained in high purity and so can be used to make a standard solution in ...
Lye – potash in a water solution, formed by leaching wood ashes. Potash – potassium carbonate, formed by evaporating lye; also called salt of tartar. K 2 CO 3; Pearlash – formed by baking potash in a kiln. Milk of sulfur (lac sulphuris) – formed by adding an acid to thion hudor (lime sulfur). Natron/soda ash/soda – sodium carbonate ...
In 1905, Burgess and Holt observed that fusing mixtures of boric oxide B 2 O 3 and sodium carbonate Na 2 CO 3 yielded on cooling two crystalline compounds with definite compositions, consistent with anhydrous borax Na 2 B 4 O 7 (which can be written Na 2 O·2B 2 O 3) and sodium octaborate Na 2 B 8 O 13 (which can be written Na 2 O·4B 2 O 3). [6]
Molecular models of the different molecules active in Piranha solution: peroxysulfuric acid (H 2 SO 5) and hydrogen peroxide (H 2 O 2). Piranha solution, also known as piranha etch, is a mixture of sulfuric acid (H 2 SO 4) and hydrogen peroxide (H 2 O 2). The resulting mixture is used to clean organic residues off substrates, for example ...
Detergents. A detergent is a surfactant or a mixture of surfactants with cleansing properties when in dilute solutions. [1] There are a large variety of detergents. A common family is the alkylbenzene sulfonates, which are soap-like compounds that are more soluble than soap in hard water, because the polar sulfonate is less likely than the polar carboxylate of soap to bind to calcium and other ...
Using a mix of acidic vinegar and soap to clean a plastic surface. Cleaning agents or hard-surface cleaners are substances (usually liquids, powders, sprays, or granules) used to remove dirt, including dust, stains, foul odors, and clutter on surfaces. [1]
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