Chlorine Dioxide Detection
Chlorine Dioxide
Chlorine dioxide is a chemical compound with the formula ClO2. This yellow-red gas crystallises into orange crystals at -59°C. As one of several oxides of chlorine, it is a potent and useful oxidising agent used in water treatment and in bleaching.
Chlorine dioxide is a highly endothermic compound that can decompose extremely violently when separated from diluting substances. As a result, preparation methods that involve producing solutions of chlorine dioxide without going through a gas phase stage are often preferred.
Over 95% of the chlorine dioxide produced in the world today is made from sodium chlorate and is used for pulp bleaching. A much smaller but important market for chlorine dioxide is for use as a disinfectant.
When it comes to chlorine dioxide detection, Air-Met Scientific can offer custom made solutions for your requirements. We also carry a wide range of portable and fixed instruments suitable for most applications.
Chlorine Dioxide Characteristics | ||
Synonyms | Chlorine peroxide | |
CAS No. | 10049-04-4 | |
Chemical formula | ClO2 | |
Vapour density | 2.3 (air = 1) | |
Safe Work Australia ES | TWA | 0.1 ppm |
STEL | 0.3 ppm | |
Flammable limits | LEL | 10.0% by volume (1) |
UEL | -- | |
Chemical/physical properties | Chlorine dioxide is a yellow-red gas at room temperature with an unpleasant odour similar to chlorine and nitric acid. It has a reported odour threshold of 0.1 ppm and is a highly reactive oxidising agent. Similar to chlorine, this means it will support the combustion of other materials. | |
Hazardous properties | Chlorine dioxide is an irritant to the eyes and respiratory system, causing respiratory distress, bronchitis and pulmonary oedema. | |
At concentrations in air above 10% by volume, there is a risk of chlorine dioxide decomposing explosively if triggered by heat (temperatures of 130°C), light or pressure shock. The presence of other oxidisable substances (e.g. organic dusts) can increase this risk. | ||
Occurrence/Uses | Chlorine dioxide is used industrially as a bleaching agent for paper pulp, textiles, flour, fats and oils. Being even more soluble in water than chlorine, it also finds application in water purification (swimming pools and water supplies). | |
Detectors available | Electrochemical (0 – 1 ppm) | |
Gas detector tube: (1 – 20 ppm) | ||
Suggested alarm levels | Lo: 0.1 ppm | |
Hi: 0.3 ppm | ||
Notes | (1) ILO Encyclopaedia of Occupational Health and Safety Vol 1 |
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- Acetone
- Acetylene Detection
- Ammonia Detection
- Arsine Detection
- Benzene Detection
- Butane
- Carbon Dioxide Detection
- Carbon Monoxide Detection
- Chlorine Detection
- Chlorine Dioxide Detection
- Diborane
- Ethyl Alcohol
- Ethylene Detection
- Ethylene Oxide Detection
- HDI [Hexamethylene Diisocyanate]
- Hexane
- HMDI [Hydrogenated MDI]
- Hydrogen Bromide
- Hydrogen Chloride Detection
- Hydrogen Cyanide Detection
- Hydrogen Detection
- Hydrogen Fluoride
- Hydrogen Sulfide Detection
- IPDI [Isophorone Diisocyanate]
- MDI [Methylene Bisphenyl Isocyanate]
- Mercury
- Methane Detection
- Methyl Alcohol
- Methylene Chloride
- Nitric Oxide Detection
- Nitrogen Dioxide Detection
- Nitrous Oxide
- Oxygen Detection
- Ozone Detection
- Pentane
- Phosphine Detection
- Propane
- Refrigerant Gases
- Silane Detection
- Sulfur Dioxide Detection
- TDI [2,4 Toluene Diisocyanate]
- Toluene
- Xylene (o-, m-, and p-isomers)