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  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
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Ascorbic Acid


 

Testing Items    

Specification   

APPEARANCE

WHITE OR ALMOST WHITE,CRYSTAL OR CRYSTALLINE POWDER

IDENTIFICATION

POSITIVE

MELTING POINT

191~192

PH

2.2~2.5

CLARITY OF SOLUTION

CLEAR

HEAVY METALS

0.0003%

ASSAY

99.0%~100.5%

COPPER (ppm)

3.0

IRON (ppm)

2.0

MERCURY (ppm)

1.0

ARSENIC

0.0002%

LEAD

0.0002%

OXALIC ACID

0.2%

LOSS ON DRYING

0.1%

SULPHATED ASH

0.1%

RESIDUAL SOLVENTS(as methanol ) (ppm)

500

TOTAL PLATE COUNT(cfu/g)

1000

YEASTS & MOLDS(cfu/g)

100

ESCHERICHIA.COLI 

ABSENCE

SALMONELLA

ABSENCE

STAPHYLOCOCCUS AUREUS 

ABSENCE

 
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