BASF PolyTHF 250 PTMEG 250 Molecular Weight
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 and Spandex in international) and ester ether copolymer elastomers.
Product packaging: 200KG, in barrels
Test Parameters Values Test Methods
Molecular Weight 225-275 g/mol Calculated
Hydroxyl Value 408.0-498.7 mgKOH/g NIR Methode
Maximum acid value 0.05 mgKOH/g DIN EN ISO 2114
Water content ≤150 mg/kg DIN 51 777
Chroma ≤40 APHA DIN EN 1557
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