Product Identification.:
Product name: Ascorbic Acid
Synonyms: L-Ascorbic acid; Vitamin C; VC
Molecular Formula: C6H8O6
Molecular Weight: 176.12
CASE NO: 50-81-7
Quality standard.: (see table)
The quality conforms to BP/USP.
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Ascorbic Acid Quality standard
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Item
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Index
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Characteristic
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white crystalline powder
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Melting point
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190-192 ℃
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Specific rotation
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+21.0
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Identification
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Conforms
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Assay
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≥99.0%
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Clarity of solution
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Fine
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Colour of solution(A420nm)
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A≤0.03
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Residue on ignition
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≤0.1%
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Ferrite
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≤2ppm
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Copper
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≤5ppm
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Heavy metals
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≤10ppm
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