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Sodium silicate solutions can also be used as a spin-on adhesive layer to bond glass to glass [21] or a silicon dioxide–covered silicon wafer to one another. [22] Sodium silicate glass-to-glass bonding has the advantage that it is a low-temperature bonding technique, as opposed to fusion bonding. [21]
Silicate mineral paints or mineral colors are paint coats with mineral binding agents. Two relevant mineral binders play a role in the field of colors: Lime and silicate. Under influence of carbon dioxide, lime-based binders carbonate and water silicate-based binders solidify. Together they form calcium silicate hydrates. [1]
Water glass ( sodium silicate [Na 2 SiO 3 or (Na 2 O)(SiO 2)] ) is a high strength binder used with silica molding sand both for cores and molds. [ 22 ] : 69–70 To cure a mixture of finely ground sand (e.g. by using a sand muller) and 3 to 4% of sodium silicate the binder, carbon dioxide (CO 2 ) gas is used.
Dakin's original solution contained sodium hypochlorite (0.4% to 0.5%), prepared by treating calcium hypochlorite with sodium carbonate ("washing soda"). The solution left after removal of the insoluble calcium carbonate still contained some soda. [7] Boric acid (4%) was then added as a buffering agent to maintain a pH of between 9 and 10.
For example, the commercially available sodium silicate pentahydrate Na 2 SiO 3 ·5H 2 O is formulated as Na 2 SiO 2 (OH) 2 ·4H 2 O, and the nonahydrate Na 2 SiO 3 ·9H 2 O is formulated as Na 2 SiO 2 (OH) 2 ·8H 2 O. [5] The pentahydrate and nonahydrate forms have their own CAS Numbers, 10213-79-3 and 13517-24-3 respectively.
Sodium zirconium cyclosilicate, sold under the brand name Lokelma, is a medication used to treat high blood potassium. [5] Onset of effects occurs in one to six hours. [5] It is taken by mouth. [5] Common side effects include swelling and low blood potassium. [5] Use is likely safe in pregnancy and breastfeeding. [5]
An aqueous solution of sodium silicate is acidified to produce a gelatinous precipitate that is washed, then dehydrated to produce colorless silica gel. [6] When a visible indication of the moisture content of the silica gel is required, ammonium tetrachlorocobaltate(II) (NH 4) 2 [CoCl 4] or cobalt(II) chloride CoCl 2 is added. [6]
Sodium silicate commands a 50 to 100 percent price premium over sodium hydroxide, and processors need the equivalent to 0.5 to 1 percent of it to the volume of crude oil as a neutralizing agent, depending on the acidity of the vegetable oil. Found the original source of the sentence and fixed the article Rsduhamel 19:16, 19 Dec 2004 (UTC)
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