D7 delivers a powerful disinfectant, cleaner, and deodorizer, making it practical for food production environments, public safety, and military situations.

"It appears that the mechanism of action of Oxine® is to penetrate the spore, possibly through chemical attack of the spore coat layers, and to dissolve the spore core, causing collapse of the spore structure."

***** 2020 "Chlorine dioxide (ClO2) has emerged as a promising alternative to free chlorine for water disinfection and/or pre-oxidation due to its reduced yields of chlorinated disinfection byproducts...""ClO2− serves as a radical generator, a light competitor and a radical/ozone scavenger. ClO2− reduces the concentrations of radicals and ozone in the UV/chlorine process. UV photolysis of ClO2− only generates HO• under drinking water relevant conditions. ClO3− is mainly generated from oxidation of ClO2− by HO• in the UV/chlorine process."

***** 2020 "Chlorine dioxide (ClO2) has emerged as a promising alternative to free chlorine for water disinfection and/or pre-oxidation due to its reduced yields of chlorinated disinfection byproducts. ClO2 decomposes to form chlorite (ClO2-), which influences the following advanced oxidation processes (AOPs) for micropollutant abatement in drinking water. This study aims at investigating the effects of ClO2- on the concentrations of reactive species (e.g., radicals and ozone) and on the formation of chlorate in the UV/chlorine AOP. Results showed that the concentration of ClO· in the UV/chlorine process remarkably decreased by 98.20-100.00% in the presence of ClO2- at concentration of 0.1-1.0 mg·L-1 as NaClO2. The concentrations of HO· and ozone decreased by 42.71-65.42% and by 22.02-64.31%, respectively, while the concentration of Cl· was less affected (i.e., 31.00-36.21% reduction). The overall concentrations of the reactive species were differentially impacted by ClO2-'s multiple roles in the process. UV photolysis of ClO2- generated HO· but not Cl·, ClO· or ozone under the drinking water relevant conditions. ClO2- also competed with chlorine for UV photons but this effect was minor (< 1.0%). The radicals/ozone scavenging by ClO2- outcompeted the above two to lead to the overall decreasing concentrations of the reactive species, in consistency with the kinetic model predicted trends. ClO2- reacted with radicals and ozone to form chlorate (ClO3-) but not perchlorate (ClO4-). HO· played a dominant role in ClO3- formation."

A method for producing chlorine dioxide by activating zeolite crystals (which have been impregnated with metal chlorite such as sodium chlorite, and optionally also a water-retaining substance such as magnesium sulfate, potassium chloride, potassium hydroxide, or calcium chloride) with excess protons, or activating an aqueous solution of metal chlorite and such a water-retaining substance with excess protons. Proton generating species useful for the activation are acids such as acetic, phosphoric, and citric acid, and metal salts such as ferric chloride, ferric sulfate, ZnSO 4 , ZnCl 2 , Co...

***!!!!***!!!!** 2020. "Many of the innovations stop short of evaluating actual yield, practical feasibility, or basic chemistry of the technology. In this study, our aim was to evaluate ClO2 precursors, sodium chlorite and citric acid, under disparate but applicable conditions." "low temperatures reduced ClO2 reported yield. Peak rates of production at 18 °C were estimated to be 3.51 mg/h, 3.83 mg/h, and 4.78 mg/h for sample ID 1, 2, and 3, respectively. Modeling the rate of production indicated that sample IDs had significantly different rates of production... Under 2 °C, these rates were 15 fold. We also determined that the reservoir placement could affect reported ClO2 concentrations. At the same time, ClO2 was able to reduce all three pathogens in 6-log10 CFU/carrier and performed significantly better at refrigeration temperature compared to room temperature."

***!!!!*** "Formulations for the sustained release of chlorine dioxide (ClO2) gas were developed, and their gas-producing profiles and antimicrobial effects... were evaluated" "Sodium chlorite (NaClO2) and citric acid were used to generate ClO2 gas, and the generation rate and maximum ClO2 gas concentration were controlled using diatomaceous earth (DE) and calcium chloride (CaCl2). "

"Its efficacy is largely not affected by pH and organic matter and it does no react with nitrogen compounds to form chloramines. The most widely accepted antimicrobial mechanism of ClO2 is damage to protein synthesis and increased permeability of the outer cell membrane. ClO2 gas may be more effective for inactivation of foodborne pathogens than aqueous ClO2 due to its penetration ability. Also, ClO2 gas could be applied for microbial control during transportation and storage of food." "The specific objectives of this study were, (ⅰ) to investigate the effect of relative humidity, surface characteristics of samples, and temperature on the antimicrobial efficacy of ClO2 gas... on produce and food contact surfaces, (ⅱ) evaluate the antimicrobial effects of the combination treatment of ClO2 gas with ultraviolet (UV) radiation, aerosolized sanitizer, and dry heat against foodborne pathogens on produce and seeds, (ⅲ) develop portable sustained release formulation of ClO2 gas for field application." "Combined treatment of ClO2 gas (10 ppmv) and aerosolized PAA (80 ppm) for 20 min caused 5.36, 5.06, and 4.06 log reductions of E. coli O157:H7, S. Typhimurium, and L. monocytogenes, respectively."

*****!!!!!!**** {Links to many highly valuable Chinese studies}

****!!****"So far, it has been found that chlorine dioxide only reacts with a few reducing amino acids. As early as 1967, Benarde et al. used the changes of OD280 and paper chromatography to fail to prove that chlorine dioxide is associated with proteins and free amino acids (histidine, aspartic acid, phenylalanine, arginine, proline and proline). Leucine) reacts [9]. However, Noss et al. mixed chlorine dioxide with 19 kinds of amino acids under in vitro conditions, and found that 6 kinds of amino acids showed reactivity with chlorine dioxide (expressed as chlorine dioxide consumption), namely proline, Histidine, Cysteine, Tyrosine, Tryptophan"

"In recent years, chlorine dioxide gas is directly dissolved in water. By adding stabilizers, it becomes a product that can be used directly without activation. Although the risk of unsafety is removed and the convenience of use is also brought, the addition of stabilizers reduces the purity of the solution. Restricted the use of products in higher-end areas. Adopting nanospheres to directly absorb chlorine dioxide gas, and then release it through control, not only without any additives and activation, but also the volume..."

"This paper analyzes the existence of ClO_2 and carbonates in the so-called "stable chlorine dioxide" solution prepared with stabilizers H_2O_2, Na_2CO_3 and ClO_2. At the same time, the "stable chlorine dioxide" is analyzed. The thermal stability, the influencing factors of acid activation and the bactericidal effect were studied, and compared with pure NaClO_2 and ClO_2. The results showed that the ClO_2 in the "stable chlorine dioxide" solution is based on chlorite ClO_2~- The carbonate is in the form of bicarbonate. It is also proved by theoretical analysis that during the preparation of the "stable chlorine dioxide" solution, ClO_2 undergoes redox and proton transfer reactions with H_2O_2 and Na_2CO_3, resulting in the formation of subchlorine Salt ClO_2~- and bicarbonate HCO_3~-, and O_2 is released. Therefore, it is considered that the "stable dioxygen than chlorine" solution..."

****!!!!**** "The effect of the photodegradation rate under different light sources from fast to slow is 354nm ultraviolet light, natural light, 257nm ultraviolet light, fluorescence, and darkroom, indicating that the wavelength that acts on the photodegradation of gas ClO_2 is ultraviolet light near the visible light region and Visible light with a shorter wavelength; the concentration of ClO_2 in the darkroom is basically unchanged. In the range of 15～25℃, temperature has almost no effect on the degradation rate of ClO_2. Under natural light, when the gas ClO_2 is at a higher concentration (100-200mg/L), the time required for the gas ClO_2 to decay to half of the initial concentration is between 50-60min; when the concentration is low (≤20mg/L), only It takes 10 to 20 minutes to basically decompose. (2) The theoretical study of the spatial configuration of oxychloride is based on the B3LYP/6-311+G(3df) basis set. The spatial configuration of oxychloride is studied, and the bond length, bond angle and energy of the oxychloride molecule are calculated. And vibration frequency." "Cl-Cl bond is not found in the stable molecular structure of oxychloride compounds. The chemical bond between the two monochlorides that make up the dichloride is on its two reaction center atoms, and determines the structure of the dichloride. (3) Research on the decomposition products and decomposition mechanism of gas ClO_2 combined with experimental analysis and theoretical calculation results, it is found that the final products of the photodegradation process of gas ClO_2 are Cl_2, Cl_2O_4 and Cl_2O_6, and the intermediate product is Cl_2O_5, and the reaction mechanism is proposed."

"...The microporous membrane suction filtration method and animal test method were used to observe the sterilization effect and toxicology. As a result, the chlorine dioxide produced by the Juyuan brand chlorine dioxide generator containing 0.5mg/L of chlorine dioxide, the Sadi brand stable chlorine dioxide and the Siriman disinfectant were used for 1min, 5min and 10min, respectively. The killing rate of Escherichia coli in water reached 100%. The pH value of water above 7.0 has a slight influence on the sterilization effect of the three kinds of chlorine dioxide; organic matter affects the sterilization effect of chlorine dioxide. The oral toxicity test of the three disinfectants is LD50 500 mg/kg (body weight); the accumulation coefficient K 5 is weak accumulative toxicity; the mouse bone marrow polychromatic erythrocyte micronucleus test is negative. The results show that the three chlorine dioxide disinfectants have a strong killing effect on E. coli in the water, and the toxicity is low "

"There are many methods for the determination of chlorine dioxide, including iodometry,'DPD' spectrophotometry, ultraviolet spectrophotometry, and so on. Among them, the iodometry is the most basic, but the iodometry measures all oxides in the sample. The total amount cannot be measured separately."

The micro-coated monobasic chlorine dioxide powder retains the advantages of chlorine dioxide, and is convenient to carry, store and apply, and can kill biological warfare agents, so it has great application potential under field conditions

*******!!!!************ "Chloroperoxidase catalyzes the dismutation of chlorite-forming chloride, chlorine dioxide, chlorate, and oxygen as products. The yields of chlorine dioxide are variable because chloroperoxidase also catalyzes the decomposition of this compound and, in addition, moderate concentrations of chlorine dioxide inactivate the enzyme. Chloride, chlorate, and oxygen are the products of the decomposition of chlorine dioxide. The optimum pH for the enzymic of decomposition of both chlorite and chlorine dioxide is approximately pH 2.75. At this pH, 1 mole of chlorine dioxide is dismutated to 0.3 mole of chloride, 0.7 mol of chlorate, and 0.17 mole of oxygen. At the same pH, the complete decomposition of 1 mole of chlorite yields 0.4 mole of chloride, 0.6 mole of chlorate, and 0.13 mole of oxygen. During the inactivation of chloroperoxidase by chlorine dioxide, the Soret absorption band of the native enzyme is completely lost, and the enzyme becomes chlorinated. Kinetic parameters for the chlorite reaction have been determined. The Km value for chlorite obtained from various kinetic plots was about 10 mM. The catalytic rate constant for the formation of chlorine dioxide from chlorite was about 70,000 s-1."

{Includes formulas for calculations}

Acanthamoeba castellanii is a free-living amoebae commonly found in water systems. Free-living amoebae might be pathogenic but are also known to bear phagocytosis-resistant bacteria, protecting these bacteria from water treatments. The mode of action ...

The U.S. Department of Energy's Office of Scientific and Technical Information

"To solve the problem of shortened backwashing intervals in groundwater plants, several disinfectants including ozone (O3), hydrogen peroxide (H2O2) and chlorine dioxide (ClO2) were examined to peel off the film from the quartz sand surface in four pilot-scale columns."