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Cardanol‐Based Bis(azo) Dyes as a Gasoline 91 Colorant
Author(s) -
Paebumrung Pimpaporn,
Petsom Amorn,
Thamyongkit Patchanita
Publication year - 2012
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-011-1912-y
Subject(s) - cardanol , chemistry , gasoline , organic chemistry , derivative (finance) , infrared spectroscopy , epoxy , financial economics , economics
Novel bis(azo) dyes were successfully prepared from the coupling of either natural cardanol or its hydrogenated derivative with a series of diazotized aromatic amines and diamines. These new dyes were fully characterized by NMR, infrared and UV–visible spectroscopy and mass spectrometry. The dyes are highly soluble in a variety of common organic solvents and gasoline as a consequence of the cardanol unit. The physical properties of gasoline according to American Society for Testing and Materials standard were unaffected by the presence of the bis(azo) dye derived from 1‐(4aminophenylazo)‐2‐naphthol at a concentration of 6 ppm and the dye showed excellent stability over a 3 month period.