The formula or Pentacrythritol is C(CH2OH)4 have molecular weight 136.14. Pentacrythritol is a white or light yellow with a little sweetness and soluble in water and ethanol, insoluble in benzene, ethyl ether and other mineral ether. Pentacrythritol have boiling point 276 oC and melted in 262 oC, have density of 1.35 g/cm3 and have refractive index 1.54 – 1.56.
Pentacrythritol is mainly used in the production of alkyd resin and as material of paint industry, besides as explosive material, floor paint and air lubricant oil. To handling this material should be placed in a dry clean and ventilated place, should avoid heating, damp and direct contacting to sunshine.
How to produce this material still being patented by Harry Jackson, William M. Kraft et al, and other scientist. Some journal just describe the main reaction of the manufacturing of this substances. The invention relates to a process for resolving into its component materials the waste liquor resultant from the manufacturing of pentacrythritol. More particularly, the invention relates to a process for the recovery of pentacrythritol, polypentacrythritols and formic acid salts from such waste liquor.
Pentacrythritol is conventionally produced by the condensation of acetaldehyde with formaldehyde in a aqueous medium containing a condensation catalyst. Alkali metal and alkaline earth metal compounds which are alkaline reacting in aqueous solution are normally used as condensation catalyst. Thus the oxydes, hydroxide and calcium hydroxide are particularly favored commercially as condensation catalysts for manufacture
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