Cotton Blue No. 6


Alizarin, a natural dye derived from the root of the madder plant, was used for many years before 1869 when it became the first organic colorant to be synthesized. The "Wm. Pickhardt & Kuttroff, New York" inscription on this 30 ml glass bottle containing synthetic alizarin refers to a dyestuff firm that was established in 1861, and that became the Continental Color and Chemical Co. in 1906. Alizarin is often red, but this sample is Cotton Blue No. 6.

This sample was probably part of the Loeb Collection of Chemical Types, a collection that was formed under the bequest of Morris Loeb (1863-1912), a Jewish-American chemist and philanthropist, and sent to the Smithsonian in 1920.

Location: Currently not on view

See more items in: Medicine and Science: Chemistry


Exhibition Location:

Data Source: National Museum of American History

Id Number: 1980.0597.15Catalog Number: 1980.0597.15Accession Number: 1980.0597

Object Name: Synthetic Alizarine Powder

Physical Description: glass (container material)cotton blue no. 6 (contents material)Measurements: overall: 84 mm x 37 mm; 3 5/16 in x 1 7/16 inwithout stopper: 70 mm; 2 3/4 in


Record Id: nmah_134

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