CIO2 CHLORINE DIOXIDE

Treat the odd electron like a lone pair.) (a) NO2, nitrogen dioxide (red-brown gas that pollutes the air over many cities) and (b) CIO2, chlorine dioxide (highly explosive gas used as an industrial bleach). 

CIO2 chlorine dioxide chloryl CIO2- chlorite chlorito... 

CI2 — chlorine, CIO2 — chlorine dioxide, PAA — peracetic acid, O3 — ozone. ... 

CIO2 chlorine dioxide CI2O7 dichlorine hept(a)oxide... 

Halogen, F, Cl, Br, I IFs, ICl, BrFs, ICI3, IBr (CH2)2dOHal Alkyl hypochlorite, (CH2)sC-OCI (CH2)sC-OBr (CH2)sC-OI CHgCOOBr OF2 (oxygen difluoride), CIO2 (chlorine dioxide)... 

The aqueous solution is safe to handle, the dissolution being essentially physical. On standing in sunlight the solution slowly decomposes to a mixture of acids. In alkaline solution a mixture of chlorate(lll), CIO2, and chlorate(V), CIO J, ions is rapidly produced. Chlorine dioxide is paramagnetic, the molecule containing an odd electron and having a structure very like that of NOj (p. 231). 

Chlorine dioxide has substantial reactivity, which precludes its shipment ia bulk. New technology that allows on-site generation of CIO2 from sodium chlorate [7775-09-9] rather than from chlorine is expected to result ia its more frequent use ia appHcations where capital investment and operators are warranted (24). 

Chlorite ion is oxidized rapidly to chlorine dioxide by ozone at pH 4, yielding one mol CIO2 per mol O3 when chlorite is in excess (k > lO" (39). The oxidation of bromite to bromate by ozone is too rapid to measure. Chlorine dioxide is oxidized rapidly to chlorate. Chlorate, bromate, and iodate ions do not react with ozone. 

Chlorine dioxide, CIO2, is another chlorine derivative. This unstable, potentially explosive gas must be generated at the point of appHcation. The most common method of generating CIO2 is through the reaction of chlorine gas with a solution of sodium chlorite. 

Chlorine Dioxide. Chlorine dioxide [10049-04-4] CIO2, is a gas that is more toxic than chlorine. It can explode at concentrations greater than... 

Chlorine dioxide, CIO2, is a greenish yellow gas having a pungent odor that is distinctive from that of chlorine. Liquid chlorine dioxide has a deep red color and is explosive at temperatures above —40° C. Selected physical and thermodynamic properties of chlorine dioxide are given in Table 1. 

Chlorine dioxide is soluble in water, forming a yellow to yeUow-green color solution that is quite stable if kept cool and in the dark. Various crystalline hydrates of chlorine dioxide have been described including a hexahydrate (19), an octahydrate (20), and an orange colored decahydrate (21). The partition coefficient between water and CIO2 gas is about 21.5 at 35°C and 70.0 at 0°C (22). Data on the solubiUty of chlorine dioxide in water at various... 

Chlorine dioxide gas is a strong oxidizer. The standard reversible potential is determined by the specific reaction chemistry. The standard potential for gaseous CIO2 in aqueous solution reactions where a chloride ion is the product is —1.511 V, but the potential can vary as a function of pH and concentration (26) ... 

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