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Reprint of “Genotoxic permanent hair dye precursors p-aminophenol and p-toluenediamine electrochemical oxidation mechanisms and evaluation in biological fluids”
(2020-01-01)
The p-toluenediamine (PTD) and p-aminophenol (PAP), genotoxic precursor agents widely used in permanent hair dyeing formulations, electrochemical mechanisms and evaluation in biological fluids, at a glassy carbon electrode, ...
Genotoxic permanent hair dye precursors p-aminophenol and p-toluenediamine electrochemical oxidation mechanisms and evaluation in biological fluids
(2020-01-15)
The p-toluenediamine (PTD) and p-aminophenol (PAP), genotoxic precursor agents widely used in permanent hair dyeing formulations, electrochemical mechanisms and evaluation in biological fluids, at a glassy carbon electrode, ...
Human Hair Keratin Direct Electrochemistry and In Situ Interaction with p-Toluenediamine and p-Aminophenol Hair Dye Precursors using a Keratin Electrochemical Biosensor
(2020-03-02)
Keratin is the main protein in hair strands. The process of dyeing hair with permanent dyes is quite complex and involves oxidative reactions between precursors, such as p-toluenediamine (PTD) and p-aminophenol (PAP), and ...
Assessment of the autoxidation mechanism of p-toluenediamine by air and hydrogen peroxide and determination of mutagenic environmental contaminant in beauty salon effluent
(2019-10-01)
The present work investigated the autoxidation reaction of p-toluenediamine (PTD) - a precursor - widely used in permanent hair dyeing formulation, under experimental conditions close to the hair dyeing process (oxygen ...
Assessment of the compounds formed by oxidative reaction between p-toluenediamine and p-aminophenol in hair dyeing processes: Detection, mutagenic and toxicological properties
(2021-11-15)
Previous studies have demonstrated the presence of precursors and coupling agents in wastewater from hair dyeing processes. The complex reaction involved in the oxidation of these compounds can generate extremely hazardous ...
Desenvolvimento de sensores eletroanalíticos e métodos cromatográficos para avaliação das reações de oxidação, mutagenicidade/toxicidade e determinação de p-toluenodiamina e p-aminofenol em águas residuárias mimetizando processos de tintura de cabelos
(Universidade Estadual Paulista (Unesp), 2020-03-12)
O tingimento dos cabelos é um processo adotado por milhões de pessoas em todo o mundo, e envolve reações oxidativas complexas entre agentes precursores e acopladores em meio oxidante alcalino no interior do fio de cabelo. ...