Properties: colorless or white crystalline granule or crystalline powder, odorless, taste salty, cold, soluble in water, insoluble in alcohol, overheating decomposition in moist air slight deliquescence, in the hot air in the micro weathering . The relative density 1.19, melting point 150 ℃ (the temperature loss of crystal water), pH about 8.
Performance (1) safe and nontoxic properties. As the basic Sodium citrate as a food additives for preparation of sodium citrate from the food, which is absolutely safe and reliable, will not cause harm to human health. The United Nations Food and Agriculture and World Health Organization for its daily intake without any limits, that the product is a drug-free.
(2) biodegradable. Sodium citrate diluted by the large amount of water in nature, some into citric acid, the two coexist in the same system. Citric acid by oxygen in the water, heat, light, and the role of micro-organisms can easily biodegradable. Usually by means of its decomposition aconitic acid, itaconic acid, lemon acid, Yu Kang, into carbon dioxide and water.
(3) complexing ability with metal ions. Sodium citrate on Ca2, Mg2 and other complex metal ions has a good ability of other metal ions such as Fe2 plasma have a very good complexing ability.
(4), excellent water solubility, and solubility increases with rising water temperatures.
(5) Sodium citrate has a good buffer of pH adjustment and performance. Sodium citrate is a weak acid alkali salt, and citric acid can form a strong compatibility of the pH buffer, and therefore not suitable for some large-scale changes in pH has an important use of the occasion. In addition, sodium citrate also has excellent performance and stability retardation.
Other food additives: Zeaxanthin Lycopene Xanthan Gum
Artical comes from: http://www.foodchem.com/414/Sodium_citrate_properties_and_performance
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