Technical Indicators
Item
|
Unit
|
Specifications
|
||
Optimal Grade
|
Superior Grade
|
Qualified Product
|
||
IV
|
dl/g
|
0.800±0.015
|
0.810±0.015
|
0.810±0.020
|
COOH
|
mmol/g
|
≤35
|
≤35
|
≤35
|
DEG
|
%
|
1.4±0.2
|
1.3±0.2
|
1.3±0.2
|
Moisture
|
%
|
≤0.4
|
≤0.4
|
≤0.4
|
DSC
|
℃
|
250±2
|
244±2
|
244±2
|
Acetaldehyde
|
μg/g
|
≤1.0
|
≤1.0
|
≤1.0
|
Hunterlab
|
L-Value
|
≥83
|
≥84
|
≥80
|
b-Value
|
-1.5≤b≤-0.5
|
b≤1.0
|
b≤2.0
|
|
a-Value
|
-2.0≤a≤-1.0
|
-
|
-
|
|
Density
|
g/cm³
|
1.4±0.01
|
1.395±0.01
|
1.395±0.01
|
Ash
|
%
|
≤0.08
|
≤0.08
|
≤0.08
|