| Acrylonitrile | CH2:CHCN | NO.191 | |
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| Performance |
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Measuring Range |
2 to 5 ppm |
5 to 120 ppm |
120 to 360 ppm |
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Number of Pump Stroke |
4 |
2 |
1 |
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Correction Factor |
0.4 |
1 |
3 |
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Sampling Time |
1 minute per pump stroke |
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Detecting Limit |
1 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 red. |
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| Coefficient of Variation | 10% (for 5 to 40 ppm), 5% (for 40 to 120 ppm) | ||
| 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) |
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Substance |
Concentration |
Interference |
Change color by itself |
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Nitriles (C3) |
10 ppm |
Plus error |
Discolors red stain |
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Acetone cyanohidrin |
10 ppm |
Plus error |
Discolors red stain |
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Alcohols, Esters, Ketones |
- | - |
No discoloration |
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Aromatic hydrocarbons |
- | - |
No discoloration |
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Hydrogen chloride, |
- |
- |
No discoloration |
| Other substance measurable with this detector tube |
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Substance |
Correction Factor |
Pump Strokes |
Measuring Range |
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Propionnitrile |
1.0 |
4 |
50 to 120% |
| 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. |
Red