CAS number :25190-06-1
molecular formula :C8H18O4
Chemical Name :Polytetramethylene ether glycol; Polytetrahydrofuran
Purpose :PTMEG is mainly used in the production of polyurethane elastomers, polyurethane elastic fibers (called spandex domestically, and spandex internationally) and ester-ether copolymerized elastomers.
Product Packaging :200KG barrel, loose water
Test parameters |
Value |
Test method |
Molecular Weight |
975-1025g/mol |
Calculation value |
Hydroxyl |
109.5-115.1mg KOH/g |
DIN 53 240 |
Maximum acidity |
0.05 mg KOH/g |
DIN EN ISO 2114 |
Water content |
≤150 mg/kg |
DIN 51 777 |
Chroma |
≤40 APHA |
DIN EN 1557 |