This behaviour, which has also been observed for DCA, suggests that the reaction that produces chloral hydrate is accelerated under the conditions of ozonation in combination with prechlorination and warm water temperatures (LeBel et al., 1995).
The rates of the decomposition reactions of chlorine increase as the solution becomes more alkaline, and these reactions can theoretically produce chlorite and chlorate (ClO3-); they occur during the electrolysis of chloride (Cl-) solutions when the anodic and cathodic compartments are not separated, in which case the chlorine formed at the anode can react with the alkali formed at the cathode.
The preceding reactions are examples of other types of reactions (such as combination, combustion, and single-replacement reactions), but they’re all redox reactions. They all involve the transfer of electrons from one chemical species to another. Redox reactions are involved in combustion, rusting, photosynthesis, respiration, batteries, and more.
intraperitoneal IPCS International Programme on Chemical Safety JECFA Joint FAO/WHO Expert Committee on Food Additives LD50 median lethal dose LDH lactate dehydrogenase LDL low-density lipoprotein LOAEL lowest-observed-adverse-effect level MA 3,4-(dichloro)-5-hydroxy-2(5H)-furanone MBA monobromoacetic acid/monobromoacetate MCA monochloroacetic acid/monochloroacetate MNU methylnitrosourea MOR mortality odds ratio MRI magnetic resonance imaging MTBE methyl tert-butyl ether MX 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone NADP nicotinamide adenine dinucleotide phosphate NOAEL no-observed-adverse-effect level NOEL no-observed-effect level NOM natural organic matter NTP National Toxicology Program (USA) 8-OH-dG 8-hydroxy-2-deoxyguanosine OR odds ratio PAS periodic acid/Schiff's reagent PBPK physiologically based pharmacokinetic model PFBHA O-(2,3,4,5,6-pentafluorobenzyl)-hydroxylamine p Ka log acid dissociation constant PPAR peroxisome proliferator activated receptor PPRE peroxisome proliferator responsive element RR relative risk SCE sister chromatid exchange SD standard deviation SDH sorbitol dehydrogenase SE standard error SGOT serum glutamate-oxaloacetate transaminase SGPT serum glutamate-pyruvate transaminase SMR standardized mortality ratio SSB single strand breaks TBA tribromoacetic acid/tribromoacetate TBARS thiobarbituric acid reactive substances TCA trichloroacetic acid/trichloroacetate TCAN trichloroacetonitrile TCPN trichloropropanone TDI tolerable daily intake TGF transforming growth factor THM trihalomethane TOC total organic carbon TOX total organic halogen TPA 12- O-tetradecanoylphorbol-13-acetate UDS unscheduled DNA synthesis UV ultraviolet UVA254 UV absorbance at 254 nm Vmax maximum rate of metabolism WHO World Health Organization 1.
Decomposition reactions are really the opposite of combination reactions. In , a single compound breaks down into two or more simpler substances (elements and/or compounds).
However, production of chlorine dioxide, its decomposition and reaction with NOM lead to the formation of by-products such as chlorite (ClO2-), a compound that is of health concern.