Chemical name ：polytetramethylene ether glycol; polytetrahydrofuran
CAS Number : 25190-06-1
Molecular formula : C8H18O4
Uses ：PTMEG is mainly used in the production of polyurethane elastomers, polyurethane elastic fibers (known as spandex in domestic, Spandex in international) and ester ether copolymer elastomers.
Product packaging ：200KG, barrel
|
Test parameters |
Numerical value |
method |
|
molecular weight |
225-275 g/mol |
Calculated |
|
Hydroxyl content |
408.0-498.7 mgKOH/g |
NIR Methode |
|
maximum acid |
0.05 mgKOH/g |
DIN EN ISO 2114 |
|
water content |
≤150 mg/kg |
DIN 51 777 |
|
Chroma |
≤40 APHA |
DIN EN 1557 |