1,3-Butadiene |
NO.174LL |
| CH2:CHCH:CH2 |  |
 |
Performance
| Measuring Range | 0.5 to 5 ppm |
| Number of Pump Strokes | 1 |
| Correction Factor | 1 |
| Sampling Time | 3 minutes per pump stroke |
| Detecting Limit | 0.1 ppm (n=1) |
| Colour Change | Pink → Pale Yellow |
| Reaction Principle | CH2:CHCH:CH2+ KMnO4 → Reaction Product |
| Coefficient of Variation | 10% (for 0.05 to 1 ppm), 5% (for 2 to 5 ppm) |
| Shelf Life | 3 Years |
| Corrections for temperature & humidity | Unnecessary |
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. | |
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Ammonia | No | No | |
| CO & CO2 | No | No | |
| H2S, HCN | No | No | |
| Acetylene | 50 ppm | + | White |
| Olefins | + | Pale yellow |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 2 ppm | - | 2.0 to 12% |
