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Periodic Graphics: The Chemistry Of Writing Inks

Chemical educator and Compound Interest blogger Andy Brunning explains the blend of chemicals used by pens to leave their indelible marks.

by Andy Brunning
September 21, 2015 | APPEARED IN VOLUME 93, ISSUE 37

 

09337-scitech3-compound-690.jpg
Credit: Andy Brunning/Compound Interest
To download a pdf of this article, visit http://cenm.ag/writinginks.

A collaboration between C&EN and Andy Brunning, chemistry educator and author of the popular graphics blog Compound Interest. To see more of Brunning’s work, go to compoundchem.com. Check out all of C&EN’s Periodic Graphics here.

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Comments
nobu (October 15, 2015 9:40 PM)
The structure of Eosin Y given here corresponds to the un-colored lactone form. To produce red color, the lactone ring should be cleaved to have large pi-conjugation throughout the molecule and also one of the phenol groups should be dissociated. Am I right?
mohamed (September 29, 2016 1:43 PM)
How can you colour batumain (asphalt)?

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