Piperidine is an organic compound with the molecular formula (CH2)5NH. This heterocyclic amine consists of a six-membered ring containing five methylene bridges (–CH2–) and one amine bridge (–NH–). 2403-88-5, formula is C9H19NO, Name is 2,2,6,6-Tetramethyl-4-piperidinol. It is a colorless liquid with an odor described as objectionable, and typical of amines. Related Products of 2403-88-5.
Li, Chen-Xuan;Chen, Chang-Bin;Wang, Yun-Jie;Fu, Xian-Zhong;Cui, Shuo;Lu, Jia-Yuan;Li, Jie;Liu, Hou-Qi;Li, Wen-Wei;Lau, Tai-Chu research published 《 Insights on the pH-dependent roles of peroxymonosulfate and chlorine ions in phenol oxidative transformation》, the research content is summarized as follows. The formation of halogenated disinfection byproducts (DBPs) during organic pollutants degradation in advanced oxidation processes (AOPs) has raised growing concerns globally. However, the detailed roles of chlorine ions (Cl–) in pollutant degradation by peroxymonosulfate (PMS) alone remain controversial so far. Here, we shed light on the PMS-Cl–-phenol interactions and revealed a previously overlooked pH-dependent phenol transformation pathway. At acidic pH, Cl– significantly accelerated the phenol removal. The Cl–-PMS reaction resulted in abundant reactive chlorine species, which attacked phenol to form 4-chlorophenol and 2, 4-dichlorophenol as the main transformation products. In contrast, the impact of Cl– became negligible at alk. pH. Raising the pH severely suppressed the phenol chlorination and significantly stimulated generation of singlet oxygen (1O2) for degradation of phenol and the minor formed chlorophenols. The 1O2 was resulted from a combined effect of PMS self-decomposition and PMS-benzoquinone interaction at alk. pH. Our results imply a previously-underestimated impact of Cl– on phenolic compounds degradation in PMS-based AOPs and underscore a potential risk of chlorinated DBPs formation under environmental conditions.
Related Products of 2403-88-5, 2,2,6,6-Tetramethyl-4-piperidinol(TEMPO) is a useful research compound. Its molecular formula is C9H19NO and its molecular weight is 157.25 g/mol. The purity is usually 95%.
TEMPO is an intermediate used in the preparation of Piperidinyloxy free radical derivatives.
TEMPO is an organic compound that acts as a radical scavenger. It is stable in the presence of water and air and can be used for the inhibition of bacterial growth. TEMPO reacts with reactive intermediates to form non-reactive substances and terminate chain reactions. This process is optimal at temperatures between 0°C and 40°C and pH values between 3.5 and 7.5. TEMPO has been shown to inhibit the growth of bacteria by reacting with reactive molecules such as amines, chlorides, or low energy radicals in aqueous solution. TEMPO also has genotoxic activity that inhibits DNA synthesis in bacterial cells through oxidation of guanine residues on DNA molecules., 2403-88-5.
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem