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L-Ascorbic acid

CAS No.: 50-81-7
L-Ascorbic acid
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Description
                                             Certificate of Analysis 
 
Product Name
 
L(+)-Ascorbic acid CAS# 50-81-7
Molecular Structure Batch No. MFG. DATE EXP. DATE
20180930 2018.09.30 2019.09.29
Molecular Weight Molecular Formula
176.12 C6H8O6
Quantity Packing 
1000kg 25kg/box
Storage  Keep in a cool & dry place
Items Specification Results
Appearance White or almost white crystalline powder White crystalline powder
Identification Positive Positive
Clarity of solution Clear Clear
Color of solution ≤BY7
Assay 99.0~100.5% 99.6%
Loss on Drying ≤0.4% 0.05%
Specific rotation   +20.5︒~ +21.5︒ +20.85︒
PH(with 2% water solution) 2.4-2.8 2.52
PH(with 5% water solution) 2.1-2.6 2.29
Melting range About 190℃ 191℃
Heavy metals   ≤3ppm <3ppm
Conclusion Meet the requirement of BP2016,E300,USP39,FCC10,EP8standard. 

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