Assertion: contaminated ethylene glycol | /r/MadeOf | alkaline terephthalate salt
Facets:
value: with water
type: OTHER
Source sentences:
text: Process for purifying ethylene glycol contaminated with an alkaline terephthalate salt, which comprises diluting ethylene glycol containing an alkaline terephthalate salt with water in a ratio of one part by weight of ethylene glycol to between 0.1 and 0.5 part water, acidifying the aqueous solution with a sufiicient amount of sulphuric acid to cause precipitation of the alkaline terephthalate salt as free terephthalic acid then removing the precipitated terephthalic acid from the acidified aqueous ethylene glycol, substantially dehydrating the precipitate-free aqueous ethylene glycol solution while maintained under acidic conditions, neutralizing the dehydrated ethylene glycol and distilling the neutralized ethylene glycol.