polythf 1000 ptmeg1000 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 elastomers, polyurethane elastic fibers (domestically known as spandex, internationally known as spandex) and ester-ether copolymer elastomers.
product packaging ：200kg drum, bulk water
|
test parameters |
value |
test method |
|
molecular weight |
975-1025g/mol |
calculate value |
|
hydroxyl content |
109.5-115.1mg koh/g |
din 53 240 |
|
maximum acid content |
0.05 mg koh/g |
din en iso 2114 |
|
water content |
≤150 mg/kg |
din 51 777 |
|
chroma |
≤40 apha |
din en 1557 |