Tartaric acid

The tartaric acid also known as dihydroxysuccinic acid, Dioxisuccínico Butanodioldioico acid or acid is a carboxylic acid. Its formula is HOOC-CHOH-CHOH-COOH. It is a natural product from the grape by-products. It is included in the list of Food Additives with the code E-334.

Summary

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  • 1 Properties
  • 2 Industrial Applications
  • 3 Medical Applications
  • 4 Sources

Properties

It comes in the form of colorless transparent crystals or crystalline, fine or granular powder. It is odorless, has an acidic taste and is stable in air.

Soluble in water , alcohol and ether . Melts at 170 o C.

Wine faeces containing Cream of Tartar and Calcium Tartrate are treated with enough lime milk to convert Cream of Tartar to Calcium Tartrate; This is dissociated by sulfuric acid ; the solution is filtered and the Tartaric Acid is obtained.

It can be identified by different routes, among these:

  1. 1g is dissolved in 3mm of water, which when mixed with a solution of PotassiumAcetate , a crystalline white precipitate of Potassium Bitartrate is obtained, soluble in Sodium Hydroxide and insoluble in Acetic Acid and in alcohol .
  2. With excess lime water, when cold, forms a white, flaked precipitate of Calcium Tartrate, which soon becomes crystalline. The precipitate is soluble in Potassium Hydroxideand precipitates again by boiling the liquid.

It should be kept in closed containers and in a cool place. aqueous solutions are soon altered by mold.

Industrial applications

  • Organic synthesis.
  • Effervescent drinks.
  • YeastPreparation .
  • Ceramic.
  • Photography: Printing and Development.
  • Silver of mirrorsof glass .
  • Metal coloring

Medical Applications

  • Remedies for ailments of the feet.
  • Refreshing and Temperate.
  • To quench thirst.
  • Fight the fetid sweat of the feet.

 

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