|
Item
|
Refined grade
|
Industrial grade
|
Test Method
|
|
|
Purity , %
|
≥98
|
≥95
|
GC method
|
|
|
Melting point ,ºC
|
≥74.5
|
≥73.0
|
Capillary heating method
|
|
|
Acid value(mg KOH/g)
|
280-300
|
280-300
|
Titration method
|
|
|
Moisture , %(m/m)
|
≤0.5
|
≤0.5
|
Karl Fischer method
|
|
|
Appearance
|
White powder crystal
|
|||