JPS5627650A - High-titer karl fischer reagent - Google Patents
High-titer karl fischer reagentInfo
- Publication number
- JPS5627650A JPS5627650A JP10335179A JP10335179A JPS5627650A JP S5627650 A JPS5627650 A JP S5627650A JP 10335179 A JP10335179 A JP 10335179A JP 10335179 A JP10335179 A JP 10335179A JP S5627650 A JPS5627650 A JP S5627650A
- Authority
- JP
- Japan
- Prior art keywords
- titer
- reagent
- karl fischer
- fischer reagent
- pyridine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
PURPOSE: To improve the Karl Fischer reagent in its titer and preservation stability, by mixing I2, SO2, pyridine, chloroform and prolylene glycol in a particular composition to obtain the reagent.
CONSTITUTION: The reagent includes in its one-liter mixture, I2≥0.7mol, CHCl3 350W550ml, CH3.C2H3(OH)2≥15ml, and SO2 above twice I2 and pyridine above 4.5 times I2 in a molar ratio, respectively. The titer of the reagent is above 9.5mg- H2O/ml and is maintained steadily over a long period of time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10335179A JPS5627650A (en) | 1979-08-14 | 1979-08-14 | High-titer karl fischer reagent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10335179A JPS5627650A (en) | 1979-08-14 | 1979-08-14 | High-titer karl fischer reagent |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5627650A true JPS5627650A (en) | 1981-03-18 |
Family
ID=14351705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10335179A Pending JPS5627650A (en) | 1979-08-14 | 1979-08-14 | High-titer karl fischer reagent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5627650A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4647542A (en) * | 1984-03-27 | 1987-03-03 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Karl Fischer reagent and method for determining water by means of this reagent |
US4802957A (en) * | 1985-04-26 | 1989-02-07 | Mitsubishi Chemical Industries Limited | Method for measuring the water content of a solid sample using Karl Fischer's coulometric titration |
US5179024A (en) * | 1991-05-30 | 1993-01-12 | Harald Dahms | Sealed vials containing improved karl fischer solutions, and process for water determination using these vials |
-
1979
- 1979-08-14 JP JP10335179A patent/JPS5627650A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4647542A (en) * | 1984-03-27 | 1987-03-03 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Karl Fischer reagent and method for determining water by means of this reagent |
US4802957A (en) * | 1985-04-26 | 1989-02-07 | Mitsubishi Chemical Industries Limited | Method for measuring the water content of a solid sample using Karl Fischer's coulometric titration |
US5179024A (en) * | 1991-05-30 | 1993-01-12 | Harald Dahms | Sealed vials containing improved karl fischer solutions, and process for water determination using these vials |
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