tartaric acid


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Related to tartaric acid: malic acid, citric acid, cream of tartar

tartaric acid,

HO2CCHOHCHOHCO2H, white crystalline dicarboxylic acid. It occurs as three distinct isomersisomer
, in chemistry, one of two or more compounds having the same molecular formula but different structures (arrangements of atoms in the molecule). Isomerism is the occurrence of such compounds. Isomerism was first recognized by J. J. Berzelius in 1827.
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, the dextro-, levo-, and meso- forms. The dextro- and levo- forms are optically active; the meso- form is optically inactive, as is racemic acid, a mixture of equal parts of the dextro- and levo- forms. Tartaric acid is found in many plants, e.g., grapes; this natural acid is chiefly the dextrorotatory d-tartaric acid, called also d-2,3-dihydroxysuccinic acid or l-2,3-dihydroxybutanedioic acid. This form can be partially converted to the others by heating it with an aqueous alkali, e.g., potassium hydroxide. Tartaric acids can be synthesized from maleic acids or fumaric acidsfumaric acid
or trans-butenedioic acid,
HO2CCH=CHCO2H, unsaturated dicarboxylic acid that melts at 287°C;. Maleic acid, or cis-butenedioic acid, is a geometric isomer of fumaric acid; it melts at about 140°C;.
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 by reaction with aqueous potassium permanganate. The various isomeric forms differ in such physical properties as boiling point. Tartaric acid is used chiefly in the form of its salts, e.g., cream of tartarcream of tartar,
white crystalline powder. Chemically it is potassium hydrogen tartrate, KC4H5O6, the acidic potassium salt of tartaric acid. It is used as the leavening agent in baking powders.
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 and Rochelle saltRochelle salt,
colorless to blue-white orthorhombic crystalline salt with a saline, cooling taste. It is also called Seignette salt after Pierre Seignette, an apothecary of La Rochelle, France, who was the first to make it (c.1675).
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tartaric acid

[tär′tar·ik ′as·əd]
(organic chemistry)
HOOC(CHOH)2COOH Water- and alcohol-soluble colorless crystals with an acid taste, melts at 170°C; used as a chemical intermediate and a sequestrant and in tanning, effervescent beverages, baking power, ceramics, photography, textile processing, mirror silvering, and metal coloring.

tartaric acid

a colourless or white odourless crystalline water-soluble dicarboxylic acid existing in four stereoisomeric forms, the commonest being the dextrorotatory (d-) compound which is found in many fruits: used as a food additive (E334) in soft drinks, confectionery, and baking powders and in tanning and photography. Formula: HOOCCH(OH)CH(OH)COOH
References in periodicals archive ?
The beverages segment dominated the global tartaric acid market during 2014.
The concentration of organic acids present in citrus juice of different varieties were in the following order Citric Acidgreater than Malic Acidgreater than Ascorbic Acidgreater than Tartaric Acid. The result of the study indicated that the citric acid content was higher in Musambi 1323.25 mg/100 ml juice and the lowest concentration of citric acid was found in Kinnow.
Citric, oxalic and tartaric acid have chelating properties and have more affinity for Cr, Ni and Zn in the soil [15-17].
In electrodialysis, ion-selective membranes are utilized to lower the potassium, calcium and tartaric acid concentrations to levels determined by pretreatment testing that should result in stabilization of the wine against KHT and CaHT precipitation events.
salicylic acid, nicotinamide (NIC), glutaric acid, malonic acid, benzoic acid, tartaric acid, oxalic acid, citric acid, urea, succinic acid, saccharine sodium, Pluronic 68 AR, magnesium stearate, crotonic acid, P-hydroxy benzoic acid, caffeine, 3,5 dihydroxy benzoic acid, piperazine citrate, cinnamic acid, adipic acid, hydroquinone, isonicotinic acid, acetamide, maleic acid, and ascorbic acid.
Small quantities of the minerals magnesium, sodium, iron, calcium, potassium, vitamin A and tartaric acid can be found in the fruit.
The fruit, both ripe and dry, contains mainly tartaric acid, reducing sugars, pectin, tannin, fibre and cellulose.
Request TOC of this Report- https://www.factmr.com/connectus/sample?flag=T&rep_id=2937 Sodium Potassium Tartrate also is known as Rochelle salt and is a white crystalline powder and a potassium sodium salt of tartaric acid. Sodium Potassium Tartrate is readily soluble in water and slightly soluble in alcohol.
However, when Cabernet tannins were added to a model wine (ethanol and tartaric acid in water), panelists rated the dryness intensity and duration higher than that of the original model wine.
At the time of harvest, 'Bordo' grapes presented 17.0[degrees] Brix, 3.36 and 0.50% tartaric acid, respectively, for soluble solids, pH and titratable acidity.