What are the chemicals present in red ;itmus and blue litmus paper?

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What are the chemicals present in red ;itmus and blue litmus paper?

Chemical substances ( with formula) present in blue and red litmus paper.

2006-07-16 06:56:19 · 2 answers · asked by papa 2 in Science & Mathematics ➔ Chemistry

2 answers

The active ingredient of Litmus is called Erythrolitmin.
In both as the acidity determines weather it will become blue or red.

http://en.wikipedia.org/wiki/Erythrolitmin

2006-07-16 06:59:53 · answer #1 · answered by Puppy Zwolle 7 · 0⤊ 0⤋

The active ingredient of Litmus is called Erythrolitmin. Not sure of its formula though... I know it comes from certain lichens.

2006-07-16 14:02:11 · answer #2 · answered by flu(bad)ence 2 · 0⤊ 0⤋