Toluene diisocyanate manufacturer Knowledge polythf 2900 ptmeg3000 molecular weight 25190-06-1

polythf 2900 ptmeg3000 molecular weight 25190-06-1

author: Post: 12/05/2023 149read Comments Off

chemical name ：polytetramethylene ether glycol; polytetrahydrofuran

cas number : 25190-06-1

molecular formula : c₈h₁₈o₄

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, barreled

test parameters	unit	test method	eigenvalue
hydroxyl content	mgkoh/g	ksm0065	37.4~40.1
molecular weight	g/mol	calculate value	2800~3000
water content	mg/kg	ksm0010	max. 150
acidity	mgkoh/g	ksm0065	max. 0.05
chroma	apha	ksm9172	max. 40
bhtcontent	mg/kg	uv	200~350

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