P.E.T. Specification


Specification of Upgraded Polyethylene Terephthalate chips

  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

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