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ASCORBIC ACID CRYSTALLINE POWDER - DFI-104126

Published:24/08/2016

Description

AppearanceWhite or almost white crystalline powder or colourless crystals
Shelf life36 Months
Country of ManufactureChina

Specification

IdentificationPositive reaction
Melting point190°C approx
Specific Rotation+20.5° - +21.5° at 25°C
pH(in 5% solution)2.1 to 2.6
pH(in 2% solution)2.4 to 2.8
Residue on ignition Max:0.1%
Assay99 to 100.5%
Loss on drying Max:0.15%
Heavy metals Max:10ppm
Lead Max:2ppm
Mercury Max:1ppm
ClarityClear
ColourLess than BY7
Impurity E Max:0.2%
Copper Max:5ppm
Iron (Fe) Max:2ppm
Arsenic Max:3ppm
Residual solventsMeets requirements
Impurity C Max:0.15%
Impurity D Max:0.15%
Unspecified Impurity Max:0.1%
Impurity C Max:0.2%
Impurity D Max:0.2%