Assertion: contaminated ethylene glycol | /r/CapableOf | render resultant aqueous solution
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text: It has now been found that contaminated ethylene glycol which has been recovered in the production of ethylene glycol terephthalate polyesters can be refined to a commercially acceptable product and with high yields by first diluting the contaminated ethylene glycol with water, and rendering the resultant aqueous solution suiticiently acidic by the addition of a suitable mineral acid such as hydrochloric acid, orthophosphoric acid or sulphuric acid to effect a precipitation of the soluble solid matter in the crude ethylene glycol, the solid matter being principally terephthalate salts which usually precipitate out as free terephthalic acid.