Tartaric AcidL(+)-Tartaric Acid L(-)-Tartaric Acid

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Last update: 2017-08-17 16:05
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Tartaric acid is a white crystalline diprotic acid. It is odorless, has an acid taste, and is stable in air. This aldaric acid occurs naturally in many plants, particularly grapes, bananas, and tamarinds, is commonly combined with baking soda to function as a leavening agent in recipes, and is one of the main acids found in wine. It is also added to other foods to give a sour taste, and is used as an antioxidant. Salts of tartaric acid are known as tartrates. It is a dihydroxyl derivative of succinic acid.

Tartaric acid was first isolated from potassium tartrate, known to the ancients as tartar, circa 800 AD, by the alchemist Jābir ibn Hayyān. The modern process was developed in 1769 by the Swedish chemist Carl Wilhelm Scheele.

Tartaric acid played an important role in the discovery of chemical chirality. This property of tartaric acid was first observed in 1832 by Jean Baptiste Biot, who observed its ability to rotate polarized light. Louis Pasteur continued this research in 1847 by investigating the shapes of ammonium sodium tartrate crystals, which he found to be chiral. By manually sorting the differently shaped crystals under magnification, Pasteur was the first to produce a pure sample of levotartaric acid.

Application:

1.L(+)-Tartaric Acidis widely used as acidulant in beverage and other foods. 

With its optical activity, L(+)-Tartaric Acid is used as chemical resolving agent to resolve DL-amino-butanol, an intermediate for antitubercular drug. And it is used as chiral pool to synthesize tartrate derivatives. With its acidity, it is used as catalyst in the resin finishing of polyester fabric or pH value regulator in oryzanol production. With its complexation, L(+)-Tartaric Acid is used in electroplating, sulfur removal and acid pickling. It is also used as complexing agent, food additives screening agent or chelating agent in chemical analysis and pharmaceutical inspection, or as resist agent in dyeing. With its reduction, it is used as reductive agent in manufacturing mirror chemically or imaging agent in photography. It can also complex with metal ion and can be used as cleaning agent or polishing agent of metal surface.

2.Tartaric acid and its derivatives have a plethora of uses in the field of pharmaceuticals. 

For example, tartaric acid has been used in the production of effervescent salts, in combination with citric acid, in order to improve the taste of oral medications. The potassium antimonyl derivative of the acid known as tartar emetic is included, in small doses, in cough syrup as an expectorant.

3.Tartaric acid also has several applications for industrial use. 

The acid has been observed to chelate metal ions such as calcium and magnesium. Therefore, the acid has served in the farming and metal industries as a chelating agent for complexing micronutrients in soil fertilizer and for cleaning metal surfaces consisting of aluminium, copper, iron, and alloys of these metals, respectively. 

ITEM

STANDARD

Appearance

White powder

Purity(as c4h6o6)

99.5 -100.5%

Specific rotation(20 ℃)

+12.0 ° --- +13.0 °

Heavy metals( as pb)

10 ppm max

Residue on ignition

0.05% max

Arsenic(as as)

3 ppm max

Loss on drying

0.2% max

Chloride

100 ppm max

Sulfate

150 ppm max

Oxalate

350 ppm max

Calcium

200 ppm max

Water solution clarity

Conforms to the standard

Color

Conforms to the standard

 

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