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 |
Unit of measurement |
Method |
Value |
|
Hydroxyl content |
mgKOH/g |
KSM0065 |
37.4~40.1 |
|
molecular weight |
g/mol |
Calculated |
2800~3000 |
|
water content |
mg/kg |
KSM0010 |
max. 150 |
|
acidity |
mgKOH/g |
KSM0065 |
max. 0.05 |
|
Chroma |
APHA |
KSM9172 |
max. 40 |
|
BHT content |
mg/kg |
UV |
200~350 |