| Vinyl acetate | CH3CO2CH:CH2 | NO.143 |
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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 |
4 |
2 |
1 |
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Correction Factor |
1/2 |
1 |
2.5 |
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Sampling Time |
45 seconds per pump stroke |
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Detecting Limit |
1 ppm (n=4) |
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Color Change |
White |
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Reaction Principle |
CH3CO2CH:CH2+C6H3(CH3)3+ H2S2O7 |
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| Coefficient of Variation | 15% (for 10 to 20 ppm), 10% (for 20 to 100 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) |
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Substance |
Concentration |
Interference |
Change color by itself |
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Aldehydes |
- |
Plus error |
Brown |
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Ketones |
- |
Plus error |
Brown |
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Ethylene |
1000ppm |
Plus error |
Yellow |
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Vinyl chloride |
500ppm |
Plus error |
Yellow |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 10ppm | 15ppm | 2.6 to 13.4% |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Brown
Condensation Polymer (Brown)