Home > Products > Physical Properties               Item Test method Unit PRB 172 PRB 174 Appearance ASTM E284   clear clear Viscosity at 40 ℃ ASTM D445 cSt 190 300 Cloud point ASTM D2024 ℃ 26*1 32*1 p H ASTM E70   7*2 7*2 Molecular weight Calculated   2280 2300 color ASTM D1209 Pt/Co 80 80 Water ASTM E302 % 0.25 0.25       * 1 : 10% Water solution * 2 : 5% Water solution