Vitamin C (Ascorbic Acid)

Description:

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Characteristics: white crystalline powder
Identification: positive reaction
Melting point: 191-192
pH: 2.2-2.5
Clarity of solution: clear
Color of solution: BY7 max.
Copper: 5ppm max.
Heavy metal: 3ppm max.
Iron: 2ppm max.
Oxalic acid: 0.2% max.
Sulphate ash (residue on ignition): 0.1% max.
Specific optical rotation: +20.5 ~ +21.5 degrees
Organic impurity: pass
Assay: 99.0-100.0%

Place of Origin:	China