Assertion: acetic anhydride's application | /r/HasProperty | patent no.
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text: In the copending applications S. N. 629,699, now Patent No. 2,448,368, and S. N. 625,951, now Patent No. 2,448,375, it is disclosed that organic acids may be obtained by reaction between olefin hydrocarbons, carbon monoxide and water in the presence of a nickel carbonyl catalyst under suit able conditions of temperature and pressure.