Description & Application
Ascorbic Acid (Vitamin C) is while monoclinic system crystal or crystalline powder, odorless but tastes sour. Color turns light yellow after long time storage. It is easily soluble in water, slightly soluble in ethanol, insoluble in chloroform and ether and its water solutions appears acidic.The pH value of the 5% water solution is 2.1-2.6 and the ratio rotation of the 10% (W/V) water solution is +20.5 -+21.5 .Ascorbic acid takes part in many metabolism procedures in the human body, helps decrease brittleness of blood capillaries and increase body resistance .In addition to prevention of scurvy ,it is often used as a supplement for treatment of acute or chronic infection diseases or purpura. It’s widely used in many fields such as food, beverage, breeding and forage additives as well as pharmaceutical industries.
Technical Specification
Indemnification Positive reaction
Appearance While crystalline
Purity, % 99.0-100.5
Loss on dry,% 0.4Max
Residue on ignition, % 0.1Max
Melting point 190 min °C
pH 2.1～2.6
Color of solution 0.03 (420mm) Max
Clarity of solution Clear
Arsenic (as As), 3ppm Max
Heavy metals 10ppm Max
Copper 5ppm Max
Iron 2ppm Max
Lead 2mg/kg Max
Cadium 1mg/kg Max
Oxalic acid, % 0.2 Max
Specific optical rotation +20.5°～+21.5°
Organic volatile impurities Pass
Packaging
25Kg cardboard carton
FCL Load 20tons in 1x20’fcl
Storage
Ascorbic acid is slightly hygroscopic and should be stored under conditions of low temperature and low humidity.
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