Picolinic acid
| Structural formula | |||||||||||||||||||
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| General | |||||||||||||||||||
| Surname | Picolinic acid | ||||||||||||||||||
| other names |
Pyridine-2-carboxylic acid |
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| Molecular formula | C 6 H 5 NO 2 | ||||||||||||||||||
| Brief description |
colorless, odorless crystalline powder |
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| properties | |||||||||||||||||||
| Molar mass | 123.11 g mol −1 | ||||||||||||||||||
| Physical state |
firmly |
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| Melting point |
134-137 ° C |
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| solubility |
887 g l −1 (20 ° C) |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | |||||||||||||||||||
The picolinic acid ( pyridine-2-carboxylic acid ) is an organic compound belonging to the heterocycles : (specifically heteroaromatic counts). They consist of a pyridine ring that is substituted with a carboxy group (−COOH). Together with the other two isomeric nicotinic acid and isonicotinic acid, it belongs to the group of pyridinecarboxylic acids with the empirical formula C 6 H 5 NO 2 .
Of the picolinic acid is particularly the passes Di picolinic acid ( pyridine-2,6-dicarboxylic acid ), which in the immediate vicinity to the nitrogen atom of the pyridine two carries carboxyl groups.
presentation
By oxidation, e.g. B. by means of potassium permanganate (KMnO 4 ), picolinic acid is formed from 2-picoline .
Individual evidence
- ↑ a b c d e Entry on picolinic acid in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .
- ↑ Shinkichi Shimizu, Nanao Watanabe, Toshiaki Kataoka, Takayuki Shoji, Nobuyuki Abe, Sinji Morishita, Hisao Ichimura: "Pyridine and Pyridine Derivatives", in: Ullmann's Encyclopedia of Industrial Chemistry , 2002; doi : 10.1002 / 14356007.a22_399 .
- ↑ Harold Hart (author), Leslie E. Craine (author), David J. Hart (author), Christopher M. Hadad (author); Nicole Kindler (translator): Organic Chemistry , 3rd edition, Wiley-VCH, Weinheim 2007, ISBN 978-3-527-31801-8 , p. 494.