发明授权
- 专利标题： Pyridine-free Karl-Fischer reagent and a process for the determination of water therewith
- 专利标题（中）： 不含吡啶的卡尔费休试剂及其测定方法
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申请号： US245405申请日： 1981-03-19
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公开(公告)号： US4748126A公开(公告)日： 1988-05-31
- 发明人: Wolfgang Fischer , Karl-Dieter Krenn
- 申请人： Wolfgang Fischer , Karl-Dieter Krenn
- 申请人地址： DEX Seelze
- 专利权人： Riedel-de Haen AG
- 当前专利权人： Riedel-de Haen AG
- 当前专利权人地址： DEX Seelze
- 优先权： DEX3010436 19800319
- 主分类号： G01N31/00
- IPC分类号： G01N31/00 ; G01N27/26 ; G01N31/16 ; G01N33/18
摘要：
A pyridine-free Karl-Fischer reagent for the determination of water which comprises (a) a solvent solution containing sulfur dioxide and an amine in a Karl-Fischer reagent solvent, the amine being functionally equivalent to pyridine in a Karl-Fischer reagent, and (b) a titrating agent containing iodine in a Karl-Fischer solvent; the molar ratio of amine to sulfur dioxide being about 2:1 to about 1:1 and the reagent being essentially free of pyridine.
公开/授权文献
- US4857214A Oil-soluble phosphorus antiwear additives for lubricants 公开/授权日：1989-08-15
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