CAS Number : 25190-06-1
Molecular formula : C8H18O4
Chemical name :polytetramethylene ether glycol; polytetrahydrofuran
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 barrels, loose water
Test parameters |
Numerical value |
testing method |
molecular weight |
625-675g/mol |
Calculated |
Hydroxyl content |
166.2-179.5mg KOH / g |
NIR method |
maximum acid |
0.05 mg KOH/g |
DIN EN ISO 2114 |
water content |
≤150 mg/kg |
DIN 51 777 |
Chroma |
≤40 APHA |
DIN EN 1557 |
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