Modelo: BP USP EP
product |
Vitamin C |
|
standard |
BP2010/USP34/EP6 |
|
01 |
Items |
Standard value |
02 |
characteristics |
White or almost white crystalline powder |
03 |
identification |
Positive reaction |
04 |
Melting point |
About 190C |
05 |
PH |
2.1-2.6 |
06 |
Clarity of solution |
clear |
07 |
Colour of solution |
≤BY7 |
08 |
copper |
≤5ppm |
09 |
Heavy metals |
≤10ppm |
10 |
lead |
≤2ppm |
11 |
iron |
≤2ppm |
12 |
arsenic |
≤3ppm |
13 |
Oxalic acid |
≤0.2% |
14 |
Sulphate ash (residue on ignition) |
≤0.1% |
15 |
Specific optical rotation |
+20.5~+21.5 |
16 |
Assay |
99.0%~100.5% |
17 |
Organic volatile impurities |
pass |
18 |
Residual solvents |
Methanol: NMT 3000 ppm;; |
Grupo de Produto : Vitaminas e oligoelementos