Citric acid

Citric acid

Citric acid is prized for its sour flavor, preservative quality, and ability to act as a pH buffer. For these reasons, citric acid is found in the ingredient list of many of the foods in your kitchen pantry.

CAS Number: 77-92-9

E Number: E330

SKU: 678789789798 Category:
  • Description
  • Product Specification

Description

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Citric acid with C6H8O7 formula is weak tricarboxylic acid that is used mostly in the food and beverage industry. It has a pleasant taste and also low toxicity and easiness of assimilation, so interest in industrial production got up very early.

 

Properties

Chemical formula

 

C6H8O7
Molar mass

 

192.123 g/mol (anhydrous),

210.14 g/mol (monohydrate)

Appearance

 

White solid
Density

 

1.347 g/cm3

 

Melting point

 

156 °C (313 °F; 429 K)
boiling point

 

310 °C (590 °F; 583 K)

decomposes from 175 °C

Acidity (pKa)

 

pKa1 = 3.13
pKa2 = 4.76
pKa3 = 6.39, 6.40
Chemical structure   

 

Crystallography

The usual form of this acid is the monohydrate which is grown by slow evaporation of a solution saturated at room temperature. It is orthorhombic and belongs to the space group P212121 with four molecules in a cell of dimensions a=6.290, b=9.318, c=15.39 Å.

 

Synthesis of Citric Acid

This product is low toxicity and has a variety for different industrial applications, so there is a demand for manufacturing it. In chemistry, its synthesis is expensive than the main method that uses. This procedure is fungel fermentation that two procedures are possible: the liquid surface culture and the submerged fermentation process.

 

Applications

Citric acid because of its properties such as high solubility in water, sourness, and pleasant taste, buffering properties, and non-toxicity in large volumes has increased its widespread use. One of the emerging applications of C6H8O7 is a builder, water hardness Ca2+ and Mg2+ ions by chelating that used in household detergents and dishwashing cleaners; because it prepared a lower harmful formulation than phosphates in water systems.

 

Here we have some of the most important examples such as:

 

  • Food flavoring and preservative

It is used in soft drinks to create a sour and pleasant taste, as well as to inhibit microbial activity and regulate acidity. C6H8O7 acts as antioxidants and preservatives by adjusting pH and Leading to increasing the life of frozen fish and seafood.

  • Medical uses and personal care products

This acid and its salts are used in the preparation of anticoagulant solutions such as trisodium citrate, which prevents blood clotting by forming calcium ion complexes because that is safe and has nontoxic nature. Citric acid is also used in the formulation of health and cosmetic products and is used to regulate the pH in the antioxidant system of acidic hair washes. It is used in anti-dandruff shampoos in the amount of 0.25 to 1.86% to adjust the pH and improve radiance and clarity.

One of the emerging applications of C6H8O7 is a builder, water hardness Ca2+ and Mg2+ ions by chelating that used in household detergents and dishwashing cleaners; because it prepared a lower harmful formulation than phosphates in water systems.

 

Safety information

Hazards of citric acid solutions are low concern based on experimental and modeled data that mentioned in MSDS papers. Some of them are here.

  • Inhalation may cause cough or sore throat.
  • Over-use may cause abdominal pain.
  • pour off concentrated solutions to skin and eyes can cause redness and pain.
  • Long-term or repeated consumption may cause ablation of tooth enamel.

PRODUCT DESCRIPTION: Citric acid is prized for its sour flavor, preservative quality, and ability to act as a pH buffer. For these reasons, citric acid is found in the ingredient list of many of the foods in your kitchen pantry.

Product Name: Citric Acid

CAS Number: 77-92-9

E Number: E330

Product Specification