| 1,2-Dichloroethylene | ClCH:CHCl | NO.139 |
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| Performance |
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Measuring Range |
5 to 10 ppm |
10 to 100 ppm |
100 to 250ppm |
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Number of Pump Strokes |
2 |
1 |
1/2 |
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Correction Factor |
1/2 |
1 |
2.5 |
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Sampling Time |
1 minute per pump stroke |
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Detecting Limit |
1 ppm (n=2) |
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Color Change |
Yellow |
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Reaction Principle |
1,2-Dichloroethylene is decomposed by nascent oxygen by oxidizing agent to liberate hydrogen chloride which discolors indicator to reddish purple. |
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| Coefficient of Variation | 10% (for 10 to 20 ppm), 5% (for 20 to 100 ppm) | ||
| Shelf Life | 2 Years | ||
| Corrections for temperature & humidity |
Temperature correction is necessary | ||
| Store the tubes in the refrigerator to keep at 10oC (50oF) or below. | |||
| Possible coexisting substances and their interferences | (NOTE) |
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Substance |
Concentration |
Interference |
Change color by itself |
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Nitrogen monoxide, Nitrogen dioxide |
- |
No effect |
No discoloration |
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Hydrogen chloride, Halogens |
- |
Plus error |
Produce reddish purple stain |
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Tetrachloroethylene |
- |
Plus error |
Produces reddish purple stain |
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Trichloroethylene |
- |
Plus error |
Produces reddish purple stain |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 200ppm | - | - |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Reddish Purple