Chemical Forums

Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Ihor on March 12, 2021, 01:18:27 PM

Title: Observed reaction
Post by: Ihor on March 12, 2021, 01:18:27 PM

When I fill my used glass coffee pot with well water from my kitchen tap to wash it the water turns translucent black. What is the chemical reaction that causes this and what element/ compound is the cause?

Title: Re: Observed reaction
Post by: rolnor on March 12, 2021, 02:37:08 PM

I guess you mean something comming from coffe residues? Maybe tannines?
https://roastmeisterscoffee.wordpress.com/2012/02/03/are-there-tannins-in-coffee/