Ascorbic Acid

La description

  Ascorbic Acid  is a white or slightly yellow crystals or powder,a little acid.m.p.**0℃***2℃，easily soluble in water,a little soluble in alcohol and uneasily soluble in Ether and chlorofom and other organic solvent.In solid state it is stable in air.Its water solution is easliy mutated when it meets with air.


Specification

ITEM                  STANDARD
Appearance    White or  almost  white crystal  or  crystalline powder
Identification      Positive
Melting point     **1 ℃  ~  **2℃
pH (5%,  w/v)      2.2 ~   2.5
pH (2%,w/v)      2.4 ~   2.8
Specific optical  rotation     **0.5°  ~  **1.5°  
Clarity  of  solution    Clear
Heavy metals    ≤0.***3%
Assay (as C 6H 8O6, %)     *9.0  ~  **0.5
Copper    ≤3 mg/kg
Iron    ≤2 mg/kg
Mercury    ≤1 mg/kg
Arsenic    ≤2 mg/kg
Lead    ≤2 mg/kg
Oxalic acid    ≤0.2%
Loss   on drying    ≤0.1%
Sulphated ash    ≤ 0.1%
Residual solvents (as methanol)    ≤ **0  mg/kg
Total  plate count (cfu/g)    ≤ ***0
Yeasts  & molds (cfu/g)    ≤ **0  
Escherichia.  Coli/g     Absence
Salmonella/  *5g     Absence
Staphylococcus aureus/ *5g     Absence


Details
Usage: In the pharmaceutical industry,can be used to treat  scurvy and various acute and chronic infections diseases,are applicable to the lack of VC,
              In the food industry,it can both use as nutrition-al supplements,supplementary VC in food processing,and also is good Antioxidants in food preservation,widely used in meat products,,fermented flour products,beer,tea dtinks, fruit juice,canned fruit,canned meat and so on;also commonly used in cosmetics,feed additives and other industrial areas.