Toluene diisocyanate manufacturer Knowledge BASF PolyTHF 650S PTMEG650 molecular weight 25190-06-1

BASF PolyTHF 650S PTMEG650 molecular weight 25190-06-1

                               

CAS number : 25190-06-1

molecular formula : C8H18O4

Chemical Name : polytetramethylene ether glycol; polytetrahydrofuran

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 barrel, loose water

Test parameters

Value

Test method

Molecular Weight

625-675g/mol

Calculation value

Hydroxyl

166.2-179.5mg KOH / g

NIRMethod

Maximum acidity

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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