Indigo-White

Collier's New Encyclopedia (1921)

in chemistry, C16H12- N2O29, a white powder introduced by the action of reducing agents on pure indigoblue. It may be prepared by digesting for 24 hours a mixture of indigotine, hyt Rob AKE MICHIGAN 86°30′ A 88° 87°30′ D B 87° M Wheaton Chicago Clarke Station Michigan City Warwick • Burdick Oakwood, Dunne Park Rolling to New Carlisle East Chicago South Calumet L. Prairie Bast Gary Miller • Chesterton. Lindley Coleston Gary Porter Cisman Aetna Pinelake Laporte Hammond Bend Millcreeki Otis O Hesaville Munster New Chicago North Liberty Hobart Highlando Woodville Westville Stillwell Joliet 41° Griffith Wellsboro Wheelers Alida Lakeville 30 Dyer Schererville Sedleyo Haskell Union Walkerton... 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Commiskey Dupont Brownstown A Vallonia Paris Y SWITZERLAND Patriot Canaan Crossing Wirt Moorefield, Markland Florence Delaney o Muscatuck ille Tampico Crothers JEFFERSON Vevay ville Warsaw 7 Deputy No. Madison Brooksburg Saltillo Cossuth Little York SCOTT Austin Kent Madison Blocher Hanover Carrollton Campbellsburg Scottsburg • Smedley New Philadelphia • Vienna o Lexington Williamstown Bedford Nabb حمره Harristown Marysville Lo. Marblehill Salem JOT Underwood • New Washington Livonia Farabee Henryville 38° Otiso Bethlehem WASHINGTON CLARKA Pekin 30 Owen Memphis Handing Martinsburg Borden Charlestow burg Lagrange Ohio Fredericksburg Sellersburg Blue INDIANA Palmyra Greenville Watson Bradford FOYD Depauw Galena Floyds Ution c Georgetown New Jeffersonville Salisbury U SCALE OF STATUTE MILES Crandall Albany 8 Corydon 0 10 40 50 30 20 Louisville Lanesville HARRISON SCALE OF KILOMETERS New Middletown Locust Pt 0 10 20 30 40 50 60 80 70 New Amsterdam Elizabeth Valley Cr. Dogwood Mauek port Laconia Evans Ldg. 38 O Brandenberg Westpoint N 9 County Towns Railroads Canals- E from 86° Greenwich F 85°30′ G 84°30′ 85° H J drate of calcium, sulphate of iron, and water in a closed flask filled with hydrogen. The clear solution is then decanted by means of a siphon filled with hydrogen into a vessel containing hydrochloric acid and ammonium sulphite. The precipitate of indigo-white which is formed is filtered and dried at 100°, in a stream of hydrogen. Pure indigo-white is a white powder with a silky luster. clear yellow