| Hydrogen cyanide | HCN | NO.12H |
|
|
||
| Performance |
|
Measuring Range |
0.05 to 1.6% |
|
Number of Pump Strokes |
1 |
|
Correction Factor |
1 |
|
Sampling Time |
1 minute per pump stroke |
|
Detecting Limit |
0.005% (n=1) |
|
Color Change |
Yellow |
|
Reaction Principle |
Hydrogen cyanide reacts with sodium palladosulfite |
| Coefficient of Variation |
10% (for 0.05 to 0.4 %), 5% (for 0.4 to 2 %) |
| Shelf Life | 3 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 color by itself |
|
Carbon monoxide |
- |
Plus error |
Produces blackish brown |
|
Hydrogen sulfide |
- |
Plus error |
Produces blackish brown |
|
Ethylene |
- |
Plus error |
Produces blackish brown |
| Calibration gas generation | High pressure gas cylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | C 4.7 ppm | 5.6 to 40% |
|
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
White
White reaction product