Chlorobenzene |
NO.126 |
| C6H5Cl |  |
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Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 1.5 minutes per pump stroke | |||
| Detecting Limit | 0.2 ppm (n=2) | |||
| Colour Change | White → Gray | |||
| Reaction Principle | C6H5Cl+ I2O5 + H2S2O7 → I2 | |||
| Coefficient of Variation | 15% (for 5 to 50 ppm), 10% (for 50 to 200 ppm) | |||
| Shelf Life | 3 Years | |||
| Corrections for temperature & humidity | Unnecessary | |||
| Store the tubes at cool and dark place. | ||||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Carbon monoxide | 0.1% | No (2 layers) | Pale brown (whole layer) |
| Acetylene, Hexane, Ethylene | 0.2% | No (2 layers) | Pale brown (whole layer) |
| Alcohols, Ketones | 1% | + | No |
| Esters | 0.2% | + | No |
| Aromatic hydrocarbons | + | Gray |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 10 ppm | - | 1.3 to 9.6% |
