CAS Number : 25190-06-1
Molecular formula : C8H18O4
Chemical name ：polytetramethylene ether glycol; polytetrahydrofuran
Uses ：PTMEG is mainly used for the production of polyurethane elastomers, polyurethane elastic fibers (called spandex domestically, and Spandex internationally) and ester ether copolymer elastomers.
Product packaging ：200KG barrels, loose water
|
Test parameters |
Numerical value |
testing method |
|
molecular weight |
2000±50g/mol |
SMT1701 |
|
Hydroxyl content |
54.7-57.5mg KOH/g |
Calculated |
|
maximum acid |
0.05 mg KOH/g |
SMT1702 |
|
water content |
≤150 mg/kg |
SMT1002 |
|
Chroma |
≤40 APHA |
SMT0201 |
|
Stabilizer, BHT |
200-300 ppm |
SMT1703 |