| Methacrylonitrile | CH2:C(CH3)CN | NO.192 |
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| Performance |
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Measuring Range |
0.2 to 0.5 ppm |
0.5 to 10 ppm |
10 to 32 ppm |
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Number of Pump Strokes |
4 |
2 |
1 |
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Correction Factor |
0.4 |
1 |
3.2 |
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Sampling Time |
2 minutes per pump stroke |
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Detecting Limit |
0.1 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 0.5 to 4 ppm), 5% (for 4 to 10 ppm) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity |
Unnecessary | ||
| 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 ( |
- |
Plus error |
Discolors red stain |
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Acetone cyanohidrin |
- |
Plus error |
Discolors red stain |
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Alcohols, Esters, Ketones |
20 ppm | Minus error |
No discoloration |
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Aromatic hydrocarbons |
20 ppm | Minus error |
No discoloration |
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Hydrogen chloride, |
- |
No effect |
No discoloration |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Red
C3)