CasNo： 77-92-9
Molecular Formula： C6H8O7
Appearance： White crystalline powder
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Citric acid is a white crystalline powder with the molecular formula C6H8O7. It is a weak organic acid found in most plants and many animals, serving as an intermediate in cellular respiration. Citric acid contains three carboxyl groups, making it a tricarboxylic acid. Citric acid exists in two forms: anhydrous and monohydrate. The anhydrous form crystallizes in hot solutions, while the monohydrate form crystallizes from cold solutions below 36.5°C. Anhydrous citric acid has a solubility of 146 g/100 ml of distilled water at 20°C, and the monohydrate form has a solubility of 175 g/100 ml at the same temperature. A 1% solution of citric acid has a pH of 2.3 at 25°C.
The CAS number of Citric acid is 77-92-9.
More information of Citric acid 77-92-9 are:
|
CAS Number |
77-92-9 |
|
Molecular Formula |
C6H8O7 |
|
Molecular Weight |
193.117 |
|
Density |
1.762 g/cm3 |
|
Melting Point |
153-159 °C(lit.) |
|
Boiling Point |
309.567 °C at 760 mmHg |
|
Flash Point |
155.243 °C |
|
HS CODE |
2918.14 Oral rat LD50: 3000 mg/kg |
|
PSA |
132.13000 |
|
LogP |
-1.24850 |
|
Pka |
3.14(at 20℃) |
Citric acid is a hygroscopic, strong acid with a tart flavor. It is commonly used as an acidulant in various applications, such as fruit drinks and carbonated beverages (at 0.25-0.40%), in cheese (at 3-4%), and in jellies. It also serves as an antioxidant in products like instant potatoes, wheat chips, and potato sticks, where it helps prevent spoilage by trapping metal ions. Additionally, citric acid is used in combination with other antioxidants during the processing of fresh-frozen fruits to prevent discoloration.
InChI:InChI=1/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)/p-3
Articles related to Citric acid:
|
Article |
Source |
| The role of citric acid in intermediate metabolism in animal tissues |
H.A. Krebs, W.A. Johnson , FEBS Letters, Volume117, IssueS1 August 25, 1980 Pages K2-K10 |
|
Discovery and Biosynthesis of Bolagladins: Unusual Lipodepsipeptides from Burkholderia gladioli Clinical Isolates** |
Challis, Gregory L.,Dashti, Yousef,Jian, Xinyun,Mahenthiralingam, Eshwar,Mullins, Alex J.,Nakou, Ioanna T.,Webster, Gordon , (2020) |
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