Ascorbic Acid

CAS number: 50-81-7

Molecular formula: C6H8O6

molecular weight: 176.1241

Chemical structure:

Product name: Ascorbic Acid
Expiry Date: Three years
Inspection Standard: BP2013, E300, USP36, FCC8, EP 7.
TestsStandardsResults
AppearanceWhite crystalline powderWhite crystalline powder
IdentificationPositivePositive
Clarity of solutionClearClear
Color of solution≤BY7<by7< td="">
Assay99.0~100.5%99.5%
Loss on Drying≤0.4%0.05%
Residue on ignition0.1%0.03%
Sulphate Ash0.1%0.03%
Specific rotation+20.5°~+21.5°+20.92°
pH(with 2% water solution)2.4-2.82.59
PH(with 5% water solution)2.1-2.62.35
Melting rangeAbout 190℃191℃
Heavy metals≤3ppm<3ppm< td="">
Iron≤2ppm<2ppm< td="">
Copper≤5ppm<5ppm< td="">
Impurity E≤0.2%<0.2%< td="">
Arsenic≤1ppm<1ppm< td="">
Lead≤2ppm<2ppm< td="">
Cadmium≤1ppm<1ppm< td="">
Mercury≤1ppm<1ppm< td="">
Organic volatile impuritiesMeets the requirementsconform
Related SubstancesImpurityC≤0.15%Complies
ImpurityD≤0.15%
Any Other Unspecific Impurities
Impurity≤0.10%
Total Impurity≤0.2%
Total Plate Count≤1,000cfu/g<1,000cfu/g
Conclusion: According to BP2013, E300, USP36, FCC8, EP 7.