Toluene diisocyanate manufacturer Knowledge BASF BASF PolyTHF 1000 PTMEG1000 molecular weight 25190-06-1

BASF BASF PolyTHF 1000 PTMEG1000 molecular weight 25190-06-1

author: Post: 12/04/2023 27read Comments Off

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

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