polythf 2000 ptmeg2000 molecular weight 25190-06-1
cas number : 25190-06-1
molecular formula : c8h18o4
chemical name ：polytetramethylene ether glycol; polytetrahydrofuran
purpose ：ptmeg is mainly used to produce polyurethane elastomer and polyurethane elastic fiber (domestically called spandex, internationally called spandex) and ester ether copolymer elastomer.
products packaging :200kg drum, bulk water
|
test parameters |
value |
test method |
|
molecular weight |
2000±50g/mol |
smt1701 |
|
hydroxyl content |
54.7-57.5mg koh/g |
calculate value |
|
maximum acid content |
0.05 mg koh/g |
smt1702 |
|
water content |
≤150 mg/kg |
smt1002 |
|
chroma |
≤40 apha |
smt0201 |
|
stabilizer,bht |
200-300 ppm |
smt1703 |