Toluene diisocyanate manufacturer Knowledge BASF PolyTHF 250 PTMEG250 molecular weight 25190-06-1

BASF PolyTHF 250 PTMEG250 molecular weight 25190-06-1

author: Post: 09/05/2023 74read Comments Off

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Chemical Name : polytetramethylene ether glycol; polytetrahydrofuran

CAS number : 25190-06-1

molecular formula : C₈H₁₈O₄

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, barreled

Test parameters	Value	Test method
Molecular Weight	225-275 g/mol	Calculation value
Hydroxyl	408.0-498.7 mgKOH/g	NIR Method
Maximum acidity	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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