| Acrylonitrile | CH2:CHCN | NO.191L | |
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| Performance |
|
Measuring Range |
0.1 to 0.2ppm |
0.2 to 6.0 ppm |
6.0 to 18.0 ppm |
|
Number of Pump Stroke |
4 |
2 |
1 |
|
Correction Factor |
1/2 |
1 |
3 |
|
Sampling Time |
3 minutes per pump stroke |
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|
Detecting Limit |
0.05 ppm (n=4) |
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|
Color Change |
Yellow |
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Reaction Principle |
Acrylonitrile is decomposed by acid to liberate hydrogen cyanide which react with mercuric chloride to generate hydrogen chloride. The generated hydrogen chloride discolors indicator to pink. |
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| Coefficient of Variation |
10% (for 0.25 to 1 ppm), 5% (for 1 to 6 ppm) |
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| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity |
Unnecessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substances and their interferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
|
Hydrogen chloride |
- |
No effect |
No discoloration |
|
Hydrogen cyanide |
- |
No effect |
No discoloration |
|
Nitriles ( |
- |
Plus error |
Discolor pink stain |
|
Acetone cyanohidrin |
- |
Plus error |
Discolor pink stain |
|
Alcohols, Esters, Ketones |
- |
No effect |
No discoloration |
|
Aromatic hydrocarbons |
- |
No effect |
No discoloration |
| Other substance measurable with this detector tube |
|
Substance |
Correction Factor |
No. of Pump Strokes |
Measuring Range |
|
n-Butyronitrile |
30 |
1 |
6 to 180 ppm |
|
2-Methyl-3-butenenitrile |
2.0 |
2 |
0.4 to 12 ppm |
|
2-Pentenenitrile |
1.2 |
2 |
0.24 to 7.2 ppm |
|
3-Pentenenitrile |
2.0 |
2 |
0.4 to 12 ppm |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 2ppm | - | 3 to 17% |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
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