Chemistry of inorganic compounds – Halogen or compound thereof – Binary compound containing metal
Patent
1979-03-22
1980-05-06
Hearn, Brian E.
Chemistry of inorganic compounds
Halogen or compound thereof
Binary compound containing metal
423498, 260462R, C01F 530
Patent
active
042017580
ABSTRACT:
A method for removing boric acid and salts therefrom from ethylene glycol-magnesium chloride solutions which contain at least 100 ppm of boron which comprises reducing the pH of such solutions below 7 and then adding thereto at least 3 moles of methanol based on the amount of boric acid or salt thereof present in said solution and then subjecting the thus-treated ethylene glycol-magnesium chloride solution to distillation at a temperature sufficient to remove trimethyl borate-methanol therefrom, thereby reducing the level of boron in the starting solution to not more than 35 ppm.
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Allain Ronald J.
Braithwaite David G.
Reid Ansell L.
Hearn Brian E.
Miller Robert A.
Nalco Chemical Co.
Premo John G.
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