White viscous liquid, melting point at 5 0c, boiling point at 100 0c, stable under ordinary condition. properties valueappearance(25) colorless to pale yellow viscous liquid, free from foreign matter odour(25) no strange odouractive material() 70.02.0unsulfated matter() 3.5sulfate (as na2so4) () 1.5ph value(1% sample.aq.sol) 7.0-9.5color( klett, 5%am. Aq. Sol.) 81, 4-dioxane(ppm) 30