| |
Item |
Units |
Testing Procedure |
Grade N1 |
Grade S1 |
Grade S2 |
Grade S3 |
Grade S4 |
|
1 |
Intrinsic Viscosity |
dl/g |
Ubbelohde Viscometer |
0.78 to ≤ 0.82 |
> 0.82 to ≤ 0.86 |
> 0.86 to ≤ 0.92 |
> 0.92 to ≤ 0.98 |
> 0.98 to ≤ 1.04 |
|
2 |
Color 'b' |
-- |
Minolta Chromameter |
0 Max |
0 Max |
1 Max |
2 Max |
2.5 Max |
|
3 |
Acetaldehyde Content |
ppm |
Gas Chromatograph |
1 Max |
1 Max |
1 Max |
1 Max |
1 Max |
|
4 |
Carboxyl end group |
eq/ton |
Acid-Base Titration |
27 Max |
27 Max |
27 Max |
27 Max |
27 Max |
|
5 |
Moisture content |
%wt. |
Moisture Analyser |
0.2 Max |
0.2 Max |
0.2 Max |
0.2 Max |
0.2 Max |
|
6 |
Melting Point |
deg c |
DSC II nd Run |
248 +/-2 |
248 +/-2 |
248 +/-2 |
248 +/-2 |
248 +/-2 |
|
7 |
Crystallinity |
% |
Density Gradient Column |
50 Min |
50 Min |
50 Min |
50 Min |
50 Min |
| | |