| ≥1 piece |
|
ITEMS
|
STANDARD
|
RESULT
|
|
APPEARANCE
|
WHITE CRYSTALLINE POWDER
|
PASS
|
|
IDENTIFICATION
|
POSITIVE
|
POSITIVE
|
|
MELTING POINT
|
ABOUT 190 a??
|
192 a??
|
|
PURITY
|
99-100.5%
|
100.0%
|
|
CLARITY OF SOLUTION
|
CLEAR
|
CLEAR
|
|
COLOUR OF SOLUTION
|
BY 7 MAX
|
7
|
|
PH
|
2.1-2.6
|
2.4
|
|
COPPER
|
5PPM MAX
|
<5PPM
|
|
HEAVY METALS
|
10PPM MAX
|
<10PPM
|
|
LEAD
|
2PPM MAX
|
<2PPM
|
|
IRON
|
2PPM MAX
|
<2PPM
|
|
MERCURY
|
<0.1MG/KG
|
<0.1MG/KG
|
|
ARSENIC
|
3PPM MAX
|
<3PPM
|
|
CADMIUM (Cd)
|
<1MG/KG
|
<1MG/KG
|
|
OXALIC ACID
|
0.2%MAX
|
<0.2%
|
|
SULPHATE ASH
|
0.1%MAX
|
<0.04%
|
|
SPECIFIC OPTICAL ROTATION
|
+20.5??- +22.5??
|
+21°
|
|
ORGANIC VOLATILE IMPURITIES
|
PASS
|
PASS
|
|
LOSS OF DRYING
|
0.4%MAX
|
<0.4%
|
|
MESH
|
40-80MESH
|
PASS
|
|
CONCLUSION: CONFORM WITH THE STANDARD OF BP/USP/EP
|
||