EXTRACTION, IDENTIFICATION AND SPECTROPHOTOMETRIC DETERMINATION OF 2ND IONIZATION-CONSTANT OF METHYL GALLATE, A CONSTITUENT PRESENT IN THE FRUIT SHELLS OF PITHECELLOBIUM-JIRINGA

Authors
LAJIS NH KHAN MN
Citation
Nh. Lajis et Mn. Khan, EXTRACTION, IDENTIFICATION AND SPECTROPHOTOMETRIC DETERMINATION OF 2ND IONIZATION-CONSTANT OF METHYL GALLATE, A CONSTITUENT PRESENT IN THE FRUIT SHELLS OF PITHECELLOBIUM-JIRINGA, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 33(6), 1994, pp. 609-612
Citations number
19
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry → ACNP
ISSN journal
03764699
Volume
33
Issue
6
Year of publication
1994
Pages
609 - 612
Database
ISI
SICI code
0376-4699(1994)33:6<609:EIASDO>2.0.ZU;2-I
Abstract
The main compound present in the chloroform extract of the fruit shell s of Pithecellobium jiringa has been identified as methyl gallate on t he basis of IR, mass, H-1 and C-13 NMR spectral data. Spectrophotometr ic determination of the second ionization constant (K(a2)) of methyl g allate gives a value of 9.7 x 10(-14) M at 30-degrees.