Development of Karl Fischer Reagents
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Development of Karl Fischer Reagents

Development of Karl Fischer Reagents

Development of Karl Fischer Reagents

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ChapterV: Summary <strong>of</strong> Selection Procedures for <strong>Karl</strong> <strong>Fischer</strong> <strong>Reagents</strong><br />

Sample<br />

Moisture<br />

vaporization<br />

Aquamicron<br />

AX/CXU<br />

Plastics<br />

Inorganics<br />

Minerals<br />

199<br />

NO<br />

Expected moisture<br />

content 1% or lower?<br />

YES<br />

Coulometric<br />

titration<br />

Liquid or gas?<br />

YES<br />

Interference<br />

reaction with KF<br />

reagent?<br />

NO<br />

Change in<br />

anolyte pH?<br />

NO<br />

Aquamicron<br />

AX/CXU<br />

YES<br />

YES<br />

NO<br />

Add salicylic<br />

acid<br />

Aquamicron<br />

AX/CXU<br />

General samples Amines<br />

Interference<br />

reaction with<br />

methanol?<br />

YES<br />

Aquamicron<br />

AKX/CXU<br />

Ketones<br />

Lower carboxylic acid<br />

Aromatic aldehydes<br />

SS-Z<br />

1,3,5mg/ml<br />

Add salicylic<br />

acid<br />

GEX<br />

MS<br />

YES<br />

Volumetric<br />

titration<br />

Expected moisture<br />

content 40% or<br />

lower?<br />

Liquid or gas?<br />

Interference<br />

reaction with KF<br />

reagent?<br />

Soluble in<br />

methanol?<br />

YES pH change in Soluble in NO<br />

titration solvent? chlor<strong>of</strong>orm?<br />

GEX<br />

MS<br />

NO<br />

YES<br />

Amines General samples<br />

NO<br />

NO<br />

YES<br />

NO<br />

SS<br />

10mg/ml<br />

NO YES<br />

OLX, OL II<br />

CM<br />

Petroleum<br />

products<br />

Soluble in<br />

formamide?<br />

SU<br />

FM<br />

YES<br />

Soluble in<br />

dehydrated<br />

solvent?<br />

Interference<br />

reaction with<br />

methanol?<br />

YES<br />

Interference<br />

reaction with<br />

sulfur dioxide?<br />

NO<br />

KTX<br />

CP<br />

NO<br />

YES<br />

PP<br />

Moisturevaporization<br />

GEX + PG<br />

MS+PG<br />

Sugars Ketones Aldehydes Solids

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