CAS number：147-71-7
molecular formula：C4H6O6
molecular weight：150.09
EINECS number：205-695-6
d-tartaric;tartaricacidd-minus;Tartarieacid;(S,S)-TARTARIC ACID;TARTARIC ACID;TARTARIC ACID, D-(-)-;TARTARIC ACID [DEXTRO (+)];TARTARIC ACID UNNATURAL
Organic building blocks; carboxylic acids; D-tartaric acid; food additives; acidity regulators; antioxidants; carbonyl compounds; resolution agents; pharmaceutical intermediates; chiral compounds; food and feed additives; amino acids; acidifiers; flavors and fragrances; impurities Reference substance; tartrate
| Melting point | 172-174 °C(lit.) |
| Specific optical rotation | -12.1 º (c=20, H2O) |
| Boiling point | 191.59°C (rough estimate) |
| Density | 1,8 g/cm3 |
| Refractive index | -12.5 ° (C=5, H2O) |
| Flash point | 210 °C |
| Storage conditions | Store below +30°C. |
Solubility | water: soluble100mg/mL, clear, colorless |
Shape | Crystals or Crystalline Powder |
| Acidity coefficient(pKa) | 3.0, 4.4(at 25℃) |
| Color | White |
Optical activity | [α]20/D 13.5±0.5°, c = 10% in H2O |
| Water solubility | 1394 g/L (20 ºC) |
| Sensitive | Light Sensitive |
Merck | 14,9068 |
BRN | 1725145 |
| Stability | Stable. Incompatible with oxidizing agents, bases, reducing agents. Combustible. |
InChIKey | FEWJPZIEWOKRBE-LWMBPPNESA-N |
| CAS database | 147-71-7(CAS DataBase Reference) |
Tartaric acid exists in three stereoisomers: litartaric acid, l-tartaric acid, and meso-tartaric acid. The optical activity of the mixture of equal amounts of D-isomer and L-isomer cancel each other out, which is called racemic tartaric acid. The meso body does not exist in nature and can be synthesized chemically. All tartaric acids are colorless crystals that are easily soluble in water.
● Widely used in the food industry, such as beer foaming agent, food sour agent, flavoring agent, used in soft drinks, candies, juices, sauces, cold dishes, fermentation powder, etc.
● Tartaric acid is widely used as an acidulant in beverages and other foods, in a similar use to citric acid. Tartaric acid is used in combination with tannins as a mordant for acid dyes, and is also used in some developing and fixing operations in the photographic industry. Its iron salts are photosensitizing, so they can be used to make blueprints. Tartaric acid can complex with a variety of metal ions and can be used as a cleaning agent and polishing agent for metal surfaces. Potassium sodium tartrate (Rochelle's salt) can be used to prepare Fehling's reagent, and can also be used in medicine as a laxative and diuretic, as well as an intermediate of Cincofen. Its crystal has piezoelectric properties and can be used in the electronics industry.
● Used as chromatographic analysis reagent and masking agent
● Used as a pharmaceutical splitting agent, food additive, biochemical reagent, etc. Uses: This product is widely used in the food industry, such as beer foaming agent, food sour agent, flavoring agent, used in refreshing drinks, candies, fruit juices, sauces , cold dishes, baking powder, etc.
● Chiral sources and resolving agents for chiral synthesis
● Tartaric acid mainly exists in the fruits of various plants in the form of potassium salt, and also exists in a small amount in free form. In industry, glucose fermentation is commonly used to produce dextrotartaric acid; racemate can be obtained by oxidation of fumaric acid with potassium permanganate; mesoform can be obtained by oxidation of maleic acid with potassium permanganate; L-butyric acid can be separated from the racemate. In the actual application field of tartaric acid, mainly use dextrotartaric acid or its double salt, tartar, a by-product of grape brewing, is the main raw material for the actual production of tartaric acid at present, and the tartaric acid produced is all dextrorotary.
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