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Reaction of sodium perborate with a chlorinated cyclic hindered amine (TMP‐Cl): I. Quantitative evaluation of active oxygen species in fabric bleaching
Author(s) -
Fujiwara Masami,
Tamura Takamitsu,
Akabane Yasuhiro
Publication year - 1995
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/bf02635785
Subject(s) - sodium perborate , chemistry , singlet oxygen , active oxygen , reagent , oxygen , photochemistry , hydroxyl radical , inorganic chemistry , amine gas treating , superoxide , sodium , hydrogen peroxide , radical , nuclear chemistry , organic chemistry , enzyme
The reaction of N‐chloro‐4‐hydroxy‐2,2,6,6‐tetramethylpiperidine (TMP‐Cl) with sodium perborate (PB) was investigated with special reference to the generation of singlet oxygen and the possible application to a new oxidative bleaching process. Generation of the singlet oxygen ( 1 O 2 ), the hydroxyl radical (HO·) and superoxide anion radical (O 2 · − ) in the PB/TMP‐Cl mixed solution was confirmed by the trapping reagent method. From the results of another experiment, in which the bleaching abilities of each active oxygen species were confirmed, the main active oxygen species contributing to the bleaching of purpurogallin, the skeleton of black tea pigment, in the PB/TMP‐Cl system was concluded to be 1 O 2 .