File:Benzo Colours on Cotton Yarn, Part I - DPLA - 2377ffc0f5ee074627d234ccb4737e02 (page 48).jpg

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Benzo Colours on Cotton Yarn, Part I   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Creator
InfoField
Farbenfabriken vorm. Friedrich Bayer & Co
Title
Benzo Colours on Cotton Yarn, Part I
Description
Part I of a sample book from Farbenfabriken vorm. Friedrich Bayer & Co.—the first incarnation of the modern pharmaceutical company Bayer AG established to manufacture and sell synthetic dyestuffs—containing mounted dyed yarn and cotton thread samples. Benzo refers to benzene, indicating the chemistry of direct cotton color from coal-tar derivatives. The sample colors move across the color spectrum, and the text includes directions, dye concentrations, and information on color fastness. Two cards with green and blue yarn samples contain handwritten percentages of dye concentrations and formulas. Additionally, two lists describing benzo and para color dyes have been kept with the book.
Date 1921
date QS:P571,+1921-00-00T00:00:00Z/9
institution QS:P195,Q5090408
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Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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current00:57, 5 October 2022Thumbnail for version as of 00:57, 5 October 20224,309 × 5,302 (2.46 MB)DPLA bot (talk | contribs)Uploading DPLA ID 2377ffc0f5ee074627d234ccb4737e02

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