Process for producing reagent grade hydrochloric acid from...

Details Process for producing reagent grade hydrochloric acid from... Process for producing reagent grade hydrochloric acid from...

C - Chemistry, Metallurgy

01

B

C01B 7/01 (2006.01) C01B 7/03 (2006.01) C01B 7/07 (2006.01) C07C 263/10 (2006.01)

Patent

CA 2120289

Reagent grade hydrochloric acid having an iron content of less than 200 p.p.b. is made from an industrial organic isocyanate manufacturing process by removing hydrogen chloride from organic isocyanates produced in the reaction between phosgene and an organic amine, converting the hydrogen chloride to concentrated aqueous hydrochloric acid, and contacting the acid with a strongly basic anion exchange resin.

Un acide chlorhydrique de qualité réactif, renfermant moins de 200 p.p.milliard de fer, est obtenu à partir d'un procédé industriel de production d'isocyanate organique, par élimination de chlorure d'hydrogène dans les isocyanates organiques produits par réaction entre le phosgène et une amine organique, conversion du chlorure d'hydrogène en acide chlorhydrique aqueux concentré, et mise en contact de l'acide avec une résine échangeuse d'anion fortement basique.

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