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Topic: Method of making Citrazinic Acid from Citric Acid?  (Read 3840 times)

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Offline Athiril

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Method of making Citrazinic Acid from Citric Acid?
« on: January 25, 2010, 02:11:19 AM »
I've found myself in need of citrazinic acid so I can control and play with the colour saturation in film in colour developers, unable to find anywhere to get it, and was wondering on the difficulty and process of making citrazinic acid from citric acid.

Does anyone have any suitable information?
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Offline AWK

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Re: Method of making Citrazinic Acid from Citric Acid?
« Reply #1 on: January 25, 2010, 06:24:31 AM »
Prepn from citric acid with aq NH3 at 140-160° under pressure: Bavley, Hamilton, US 2729647
Firstly citarzinic acit was obtained about 125 year ago and published in Berichte der Deutche Chemische Geselschaft
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Offline Athiril

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Re: Method of making Citrazinic Acid from Citric Acid?
« Reply #2 on: January 25, 2010, 11:23:25 PM »
Thanks, I might try that in small quantites in a week or so.
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Offline akcapr

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Re: Method of making Citrazinic Acid from Citric Acid?
« Reply #3 on: January 27, 2010, 12:52:00 AM »
Only method i could come up with is creating the tri-amide of citric acid with ammonia then cyclizing with heat and acid. As presented previously
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