Molecular formula: C20H14O4
CAS NO.77-09-8
Specification:
|
ITEM
|
STANDARD
|
|
Appearance
|
White powder
|
|
Content
|
99% min
|
|
Color of Solution
|
A 0.15 max
|
|
Melting Point
|
258-263 OC min
|
|
Heavy metal
|
15 ppm max
|
|
Arsenic
|
8 ppm max
|
|
Residue on ignition
|
0.1% max
|
|
Loss on drying
|
1.0% max
|
|
Flouean
|
Pass
|
|
Chromatographic impurity
|
1.0% max
|
|
Organic volatile impurity
|
Pass
|
