Carbon disulphide |
NO.13L |
| CS2 |  |
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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 | 2 minutes per pump stroke | ||
| Detecting Limit | 0.05 ppm (n=2) | ||
| Colour Change | Bluish purple → White | ||
| Reaction Principle | CS2 + CrO3 + H2S2O7 → SO2 + CO2 SO2 + I2 + H2O → HI + H2SO4 |
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| Coefficient of Variation | 10% (for 0.1 to 1.0 ppm), 5% (for 1.0 to 3.0 ppm) | ||
| Shelf Life | 2 Years | ||
| Corrections for temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Chloroform |  150ppm |
+ | White |
| Carbon tetrachloride | 50ppm |
+ | White |
| o-Dichlorobenzene | 20ppm |  |
No( 20ppm) |
| Dichloromethane | 100ppm |
+ | White |
| Tetrachloroethylene | 80ppm |
+ | White |
| Trichloroethylene | 10ppm |
+ | White |
| Hydrogen sulphide | 50ppm |
+ | No(50ppm) |
| Acetone | 750ppn | No | No |
| Ethyl acetate | 200ppm | No | No |
| Toluene | 40ppm | No | No |
| n-Hexane | 100ppm | No | No |
| Methanol | 300 ppm | No | No |
| Methyl ethyl ketone | 250ppm | No | No |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 1 ppm | - | 1.3 to 50% |
