|
ITEM
|
STANDARD
|
RESULT
|
|
DMF %
|
≥ 99.9
|
99.95
|
|
MOISTURE %
|
≤ 0.050
|
0.004
|
|
CHROMINANCE(PT-CO)
|
10
|
5
|
|
ALKALINITY(DIMETHYLAMINE) %
|
≤ 0.0010
|
0.0002
|
|
ACIDITY(FORMIC ACID) %
|
≤ 0.0010
|
0.0003
|
|
PH(25°C, 20% AQUENOUS SOLUTION)
|
6.5~8.0
|
7.81
|
|
ELECTRIC CONDUCTIVITY
(25°C )/(US/CM) |
≤ 2.0
|
0.21
|
|
Fe (MG/KG)
|
≤ 0.05
|
0.01
|
|
HEAVY COMPOMENT
(DIMETHY ACETAMIDE) ω/% |
------------
|
0.0028
|
|
CONCLUSION
|
QUALIFIED
|
|