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Ascorbic Acid

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INTRODUCTION
Parameters

Product

Ascorbic acid

CAS No.

50-81-7

Molecular Formula

C6H8O6

Molecular Weight

176.12

Structural Formula

Quality Standard

BP2014/USP39/EP7/E300/FCC7

Packing

25 Kg/Carton

Shelf Life

3 Years

Specification

Standard

Characteristics

White or almost white,Crystalline powder or colourless crystals

Identification

Corresponds

Melting Point

189°C ~ 193°C

PH (5%,W/V)

2.1-2.6

PH (2%,W/V)

2.4-2.8

Specific Optical Rotation

+20.5° ~ +21.5°

Apperance of Solution

Clarity: Clear; Colour: ≤BY7

Heavy Metals

≤10ppm

Copper

≤5 ppm

Iron

≤2 ppm

Mercury

<1 ppm

Arsenic

≤3 ppm

Cadmium

<1 ppm

Lead

<2 ppm

Loss of Drying

≤0.4%

Sulphate Ash

≤0.1%

Oxalic Acid (Impurity E)

≤0.2%

Related substances

Impurity C:  ≤0.15%

Impurity D:  ≤0.15%

Unspecified impurities:  ≤0.10%

Total impurities:  ≤0.20%

Residual solvents

Meets the requirements

Assay

99.0%-100.5%

 

Keyword:
vitamin c
ascorbic acid
vc
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