Monday, March 29, 2010

Does anybody know?

Hello there again. I have an interesting chemical experience to share with you. Yesterday, I had some fountain-pen ink on my fingers. As I was using sodium hydroxide to ease the flow at the used water drain, I accidentally spilled some onto my hands, over the blue ink. Almost instantaneously, it turned crimson red.

I tried to find out what the ink was made of, in order to determine the reaction that occurs, but I didn't find anything on the Internet.

Anyway, I know some details about both the ink and the reaction, and I have some photos taken afterwards when doing the experiment properly. The ink was Schneider (just in case any of you knows the composition :D ). The pH (measured by me with litmus paper) of the ink was around 6.5 and that of the final product was about 13. The sodium hydroxide was 50% in the solution. It also contained NaClO. Here I have some photos during the experiment.

In conclusion, if any of you happens to know what is going on over there, please leave a comment with your opinion.

The Schneider ink


The NaOH / NaClO solution


The upper ring is the final product after pouring in the ink
Posted by Andrei Florea at 7:08 PM
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2 comments:

  1. The specification discloses improved alkyd-based ink vehicles for lithographic inks. An ink vehicle according to the invention may contain a rosin ester resin, an ink solvent and from about 1 to about 30% by weight alkyd resin comprising the reaction product of a monounsaturated cyclic diacid anhydride, a polyol and a tall oil fatty acid. The ink vehicle enables faster ink drying and improved pigment wetting without significant adverse affects on other properties of ink formulations such as misting and volatility.

    Cred ca te ajuta:D

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  2. We are also dealing in chemicals like emulsifier for cutting oils and other water soluble formulations.For more info visitNipro Limited

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