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D-Tartaric Acid

D-Tartaric Acid

CAS No.: 147-71-7
Molecular formula: C4H6O6
Molecular weight: 150.09
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Nature

Melting point

172-174 °C(lit.)

Specific 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

form

Crystals or Crystalline Powder

Acidity coefficient (pKa)

3.0, 4.4(at 25℃)

colour

White

Water solubility

1394 g/L (20 ºC)

Sensitivity

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)


Chemical properties

There are three stereoisomers of tartaric acid: tartaric acid, levotartaric acid and meso-tartaric acid. The optical rotation of a mixture of equal amounts of right-handed and left-handed bodies cancels each other out and is called racemic tartaric acid. The meso form is not found in nature and can be synthesized chemically. Various tartaric acids are colorless crystals that are readily soluble in water.


Use

1. Tartaric acid is widely used as an acidifying agent for beverages and other foods, and this use is similar to citric acid. Tartaric acid is used as a mordant for acid dyes and as a mordant for acid dyes. It is also used in some development and fixing operations in the photographic industry. Its iron salt is photosensitive and can therefore be used to make blueprints. Tartaric acid can be complexed with various metal ions and can be used as a cleaning agent and polishing agent for metal surfaces. Potassium sodium tartrate (Rocheer salt) can be formulated into a Ferin reagent, and can also be used as a laxative and a diuretic in medicine, and also as an intermediate of cinchon. Its crystals have piezoelectric properties and can be used in the electronics industry.

2. Used as a chromatographic reagent and masking agent

3. Used as a pharmaceutical disintegrator, 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 for refreshing drinks, candy, juice, Sauce, cold dish, baking powder, etc. This product complies with the Japanese Food Additives Regulations.


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