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Chlorine dioxide (ClO2) is a strong oxidizing agent soluble in normal temperature and pressure is a yellow-green gas, but at a lower temperature liquid is presented. The molecular weight of 67.45, the boiling point of 11 ° C, melting point -59 ° C, ClO2 gas density 3.09 (11 ° C), the liquid density of 1.64,0 ℃ ClO2 saturated vapor pressure is 500torr. Chlorine dioxide chlorine dioxide in water monomer, not polymerization ClO2 gas 4kpa at 20 ° C and under pressure, the solubility is 2.9g / l. Combined with the organic matter in the water do not, not carcinogen chloroform generated (it is called non-carcinogenic disinfectant).
ClO2 has a structure with a lone pair of electrons of chlorine - oxygen double bond, very unstable, light reaction that produces oxygen free radicals, strong oxidizing. The following table lists the oxidation of chlorine dioxide and other oxidation capacity of disinfectant, the disinfection. (Usually expressed as available chlorine).
|
氧 化 剂 |
ClO2 |
H2O2 |
NaClO2 |
KMnO4 |
Cl2 |
NaClO |
|
氧化能力 |
263% |
209% |
157% |
111% |
100% |
93% | |
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