Development of Karl Fischer Reagents

Substance
Epoxy resins (powder)
Isocyanates (principal)
Silicon bonds
Aluminum adhesives
Pastes
Porcelain adhesives
Sealing compounds
Heating Temperature
( � C)
250
180
210
200
150
180
230
15. Soaps and Detergents
Key Points
Sample Quantity
(g)
0.7074
0.3079
0.4800
0.2670
0.3230
0.9336
0.4367
Chapter III: Applications - 2
Measurement Value
(µg)
1080
0941
0909
1180
0954
0964
1218
Moisture Content
(%)
0.153
0.306
0.189
0.442
0.295
0.103
0.279
Because soaps and detergents generally have a high moisture content,
volumetric titration is used. The moisture vaporization method is used
for metallic soaps, some of which cause interference.
Direct coulometric titration can be used for samples that will dissolve in
electrolyte.
[Examples of Measurement]
(1) Volumetric titration
Reagents used: Karl Fischer Reagent SS-Z (or SS)
Dehydrated Solvent GEX, OL II(or MS,CM) 30-50ml
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