Sodium gluconate

In this experiment phosphate is determined by singlecolumn, or nonsuppressed, ion chromatography using an anionic column and a conductivity detector. The mobile phase is a mixture of n-butanol, acetonitrile, and water (containing sodium gluconate, boric acid, and sodium tetraborate). 

A number of complex derivatives of antimony pentoxide with polyhydroxy compounds have been iavestigated as dmgs. The most important of these substances is known as antimony sodium gluconate [16037-91-5] C22H2Q02ySb2 9H20 3Na, which is prepared by the reaction of antimony pentoxide, gluconic acid, and sodium hydroxide (53). 

Depending on which of the products, caldum gluconate, sodium gluconate or gluconic add (free add) is required, die fermentations have some basic differences. 

Hie two main differences between caldum gluconate and sodium gluconate production are that, in the latter, pH control is performed by addition of sodium hydroxide and the initial glucose concentration is different... 

Medium containing up to 35% glucose is steam sterilised by a steam jacket around a conventional stirred tank reactor. pH adjustment starts as the medium cools and is maintained at 65. Vigorous aeration is again required. Inoculation is usually by using a mycelial suspension. Under these conditions a 30% glucose solution can be almost quantitatively converted to sodium gluconate within 36 hours. 

Downstream processing to obtain caldum gluconate is different to that employed to obtain either sodium gluconate or the free gluconic add. 

During sodium gluconate formation, pH control is by addition of sodium hydroxide. 

Starting glucose concentrations in calrium gluconate fermentations are higher than those for sodium gluconate fermentations. 

False. The reverse is true, because sodium gluconate is far more soluble than caldum gluconate high glucose concentrations can be used to produce higher production yields of sodium gluconate. 

When boiler cleaning takes place, it often is followed by the circulation of a hot alkaline phosphate solution to provide adequate passivation of metal surfaces. (A typical formulation may also include sodium gluconate, antifoam, and dispersants.)... 

Citric acid and other hydroxycarboxylic acids, such as gluconic acid. Also, derivatives such as sodium gluconate (D-gluconic acid, sodium salt), HOCH2[CH(OH)]4 COONa. 

Under alkaline cleaning conditions, sodium gluconate can be used to similar effect because the gluconate-ferric ion complex is particularly stable. 

Oily/rusty surfaces that need cleaning can be simultaneously deoiled and derusted by employing a hot, alkaline gluconate program (5% caustic, 2% sodium gluconate) with 0.2% anionic or nonionic surfactant. 

Phosphoric/citric/sodium gluconate resin cleaner 349... 

The reduced catalyst deactivation compared to the analogous oxidations of glycerol and tartronic acid was attributed to the use of the calcium salt rather than the free acid. A recent publication describes a similar observation for the oxidation of sodium gluconate [15]. Sodium ions were assumed to counter catalyst deactivation by neutralizing the acid species responsible. 

Antimony sodium gluconate, 3 67 Antimony sulfate, 3 65 AntimonyCIII) sulfate, 3 65... 

Sodium aluminium phosphate, acidic Sodium aluminium silicate Sodium benzoate Sodium calcium polyphosphate Sodium carbonate Sodium ethyl p-hydroxybenzoate Sodium ferrocyanide Sodium gluconate... 

Pedrosa, A. and Serrano, M.L. Solubilities of sodium gluconate in water and in aqueous solutions of ethanol and methanol, /. Chem. Eng. Data, 45(3) 461-463, 2000. 

After appropriate dilutions, samples collected for concentration determinations were analysed using the sodium gluconate - potassium fluoride method on a dosimate-titrator (Kirke, E.A., Alcoa of Australia, Kwinana, personal communication, 1986). Total alkaline, totd caustic and alumina concentrations were determined using this method. 

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