VITAMIN C
SYNONYM: ASCORBIC ACID
FORMULA: C6H8O6, [-OCOC(OH):C(OH)C-]HCHOHCH2OH
M. W.: 176
CAS NO.: 50-81-7
GRADE: EP / BP98 / USP23 / DAB
DESCRIPTION:
WHITE CRYSTAL OR CRYSTALLINE POWDER.
SPECIFICATIONS:
|
IDENTIFICATION
|
POSITIVE
|
|
CLARITY OF
SOLUTION
|
CLEAR
|
|
COLOR OF
SOLUTION
|
BY7MAX
|
|
MELTING POINT
|
191 – 192℃
|
|
ASSAY
|
99.0 – 100.5%
|
|
ACIDITY (PH)
|
2.2 – 2.5
|
|
RESIDUE ON
IGNITION
|
0.1%MAX
|
|
SPECIFIC
ROTATION
|
+20.5°- +21.5°
|
|
HEAVY METALS
|
0.0003%MAX
|
|
OXALIC ACID
|
0.2%MAX
|
|
COPPER
|
0.0005%MAX
|
|
IRON
|
0.0002%MAX
|
|
ORGANIC
VOLATILE IMPURITIES
|
MEETS USP23
STIPULATION
|
PACKING: 25KGS/CARBOARD DRUM, 19.50MT/1x20’FCL.
