Chemical Forums
Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Harrij on February 06, 2010, 05:03:21 AM
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I need to find a good analytical way to determine the acid value in DADPM (4,4'-Diamino diphenyl methane).
I use 1-propanol which is injected with a little HNO3. This is reacting with DADPM .
IF the DADPM is contaminated with HCL a acid result needs to be the result.
My PROBLEM in this: WHY, do I get two curves ( endpoints ) when both acids involved are the value1 ( I guess you understand what I mean )
MY questions: What can I do to get ONLY one endpoint curve? And what is the reaction of all components?
4,4'-Diamino diphenyl methane + 1-propanol + HNO3 > .....
4,4'-Diamino diphenyl methane + HCL + 1-propanol + HNO3 > ....
Okay, clever ones make my day.. MIND YOU the HCL will be in 2 - 10 ppm aswell as the added HNO3 !!!!
Titration is carried out with 1.0N KOH !!