| Tetrahydrothiophene | C4H8S | NO.76 | |
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| Performance |
|
Measuring Range |
1 to 10 ppm |
|
Number of Pump Stroke |
4 |
|
Correction Factor |
1 |
|
Sampling Time |
1.5 minutes per pump stroke |
|
Detecting Limit |
0.25 ppm (n=4) |
|
Color Change |
Pink |
|
Reaction Formula |
Tetrahydrothiophene reduces permanganate |
| Coefficient of Variation | 10% (for 1 to 3 ppm), 5% (for 3 to 10 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) |
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Substance |
Concentration |
Interference |
Change color by itself |
|
Ethyl mercaptan |
1ppm |
No |
Discolor whole layer to pale pink |
|
Ethylene |
1000 ppm |
No |
Discolor whole layer to pale pink |
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Propylene |
500 ppm |
No |
Discolor whole layer to pale pink |
|
Methanol |
300 ppm |
No |
Discolor whole layer to pale pink |
|
Hydrogen sulfide |
30 ppm |
No |
Discolor whole layer to pale pink |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Pale Yellow
Yellow Reaction Product