Dipicolinic acid

• Pyridin-2 ,6-dicarboxylic acid
• DPA
• PDC

Colorless, almost odorless needles

Fixed

Decomposition from 248 ° C

1 Pa ( 20 ° C)

• PKS1 (25 ° C) = 2.17
• PKS2 (25 ° C) = 4.97

• Poorly in water (5 g · l-1 at 20 ° C)
• Soluble in alkalis

Attention

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Dipicolinic acid ( pyridine-2 ,6-dicarboxylic acid ) is an organic compound that the heterocycles (more precisely, heteroaromatics ) counts. It belongs to the group of the pyridine dicarboxylic acids. It consists of a pyridine ring, the 2 - and 6-positions bear carboxy. The name is derived from the picolinic acid ( pyridine -2 -carboxylic acid), which carries a carboxyl group at the 2- position on the pyridine.

Occurrence

Dipicolinic acid is a substance that during sporulation ( sporulation ) is formed by micro-organisms. It is only in the core ( spores protoplasts) of endospores before (5-15 % of the dry weight) but is not in vegetative cells. A representation occurs, for example from 2,6- lutidine by oxidation of the methyl groups.

Biological Significance

Dipicolinic acid is responsible for the thermal resistance of certain bacteria, and often is present as a chelate with calcium ion (Ca2 ) in front.

Use

Dipicolinic acid is used in the chemical industry for the preparation of bound with Dipicolin lanthanides ( as a chelate ) and used as a complexing agent for transition metal complexes, as well as a stabilizer for peroxide and as an intermediate for the preparation of other chemical compounds.