| Detailed Description: |
Cas No. :77-92-9
| Product name |
Citric acid |
| English name |
Citric acid |
| Alias |
Citrate; 2-Hydroxypropane-1,2,3-tricarboxylic acid; Citric acid (anhydrous); 3-Hydroxy-3-carboxyglutaric acid; anhydrous citric acid; 3-Hydroxy-3-carboxyglutaric acid |
| CASE RN |
77-92-9 |
| EINECS number |
201-069-1 |
| Molecular formula |
C6H8O7 |
| Molecular weight |
192.122 |
| Dangerous goods mark |
 Xi:Irritant |
| Risk terminology |
R36/37/38 ; |
| Security terms |
S26 ; S37/39 ; |
| Physical and chemical properties |
The relative density is 1.542, the melting point is 153 °C (water loss), and the refractive index is 1.493~1.509
Colorless translucent crystalline or white particles, or white crystalline powder, often containing a molecule of crystal water, odorless, extremely acidic, soluble in water, alcohol and ether. Its calcium salt is more soluble in cold water than in hot water, and this property is often used to identify and isolate citric acid. Anhydrous citric acid can be obtained by controlling the appropriate temperature during crystallization. The aqueous solution is acidic. It is slightly weathering in dry air and deliquescence in humid air. Above 175 °C, water and carbon dioxide are liberated. |
| Uses |
It is used as experimental reagent, chromatographic analysis reagent and biochemical reagent, and is also used in the preparation of buffers. It is used in the food industry, especially as an acidifier, pH buffer, and other compounds as a preservation agent. In the detergent industry, it is an ideal alternative to phosphates. Boiler chemical cleaning pickling, boiler chemical cleaning rinse agent. It is mainly used as a sour agent for food, and is also used in the preparation of pharmaceutical cooling agents and detergents |
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Xi:Irritant;
