white powder, Vitamin C

Food and feed additives assay:>99% white powder packing:25kg/ctns

Ascorbic Acid BP/USP/FCC

   APPEARANCE                    WHITE OR ALMOST WHITE,CRYSTALLINE POWDER                        

     IDENTIFICATION                  POSITIVE                        

MELTING POINT                 ABOUT 190°C                   

pH(5%,W/V)                      2.1 ~2.6                        

SPECIFIC OPTICAL ROTATION     +20.5°~21.5°                  

CLARITY AND COLOR OF SOLUTION    CLEAR, ≤BY7                  

COPPER                         ≤0.0003%                       

HEAVY METALS                 ≤0.001%                          

IRON                           ≤0.0002%                        

MERCURY                       ≤0.0001%                      

ZINC                            ≤0.0025%                        

ARSENIC                         ≤0.0003%                        

LEAD                           ≤0.0002%                          

OXALIC ACID                     ≤0.2%                          

LOSS ON DRYING               ≤0.1%                            

SULPHATED ASH                 ≤0.1%                            

ASSAY                          99.0 ~ 100.5%                    

ORGANIC VOL.IMPURITIES      MEET THE REQUIREMENTS  

white powder, Vitamin C