What might cause a purple color to develop in the cyanide test?

Document ID

Document ID TE1108

Published Date

Published Date 27/05/2017
Question
What might cause a purple color to develop in the cyanide test?
Summary
Purple color in cyanide method
Answer
A sample can turn purple after addition of CyaniVer® 5 reagent if the neutralization step after the distillation was not done properly.