Visualizing Agents for Aromatic Carboxylic Acids

In this article, reference has frequently been made to the detection of acids with bromocresol green and other systems. Some other reagents for aromatic car-boxylic acids are hydrogen peroxide or alkaline potassium permanganate. Several new visualizing agents and sodium hydroxide (10% aqueous solution) were compared with respect to the minimum quantity of acid detectable (ug per spot) and the type of layer. Generally, of the three layers, silica gel 60 GF254, silica gel-kieselguhr mixtures and polyamide, the first was preferred. Although the minimum detectable amount of solute varied with the 13 different solutes and the 12 different visualizing agents examined, thymol blue detected all the solutes while bromothymol blue and bromocresol green detected all but 4-hydroxybenzoic acid and 3-hy-droxycinnamic acid respectively with silica gel as adsorbent.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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