Kertas Saring whatmann No 41 diameter 125mm

vapor density >1 (vs air) vapor pressure <0.3 mmHg ( 20 °C) form solid feed ratio 20:70:20 (EO:PO:EO) mol wt average Mn ~5,800 composition PEG, 30 wt. % refractive index n20/D 1.465 surface tension 34 dyn/cm, 25 °C, 0.1 wt. % in H2O viscosity 350 cP(60 °C, Brookfield)(lit.) transition temp Tm (DSC) 39 °C (at peak) cloud point 90 °C (1 wt. % aqueous solution)