| Phosgene | COCl2 | NO.16 | |
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| Performance |
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Measuring Range |
0.05 to 0.1 ppm |
0.1 to 5 ppm |
5 to 20 ppm |
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Number of Pump Strokes |
10 |
5 |
1 |
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Correction Factor |
1/2 |
1 |
4 |
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Sampling Time |
1 minute per pump stroke |
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Detecting Limit |
0.01 ppm (n=10) |
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Color Change |
White |
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Reaction Principle |
COCl2+ (CH3)2NC6H4CHO |
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| Coefficient of Variation | 10% (for 0.1 to 1 ppm), 5% (for 1 to 5 ppm) | ||
| Shelf Life | 1.5 Years | ||
| Corrections for temperature & humidity |
Temperature correction is necessary | ||
| Store the tubes in the refrigerator to keep at 10oC (50oF) or below. | |||
| Possible coexisting substances and their interferences | (NOTE) |
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Substance |
Concentration |
Interference |
Change color by itself |
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Hydrogen chloride |
1/10 time |
Plus error |
Produces yellow discoloration |
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Chlorine |
1/2 time |
Plus error |
Produces yellow discoloration |
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Nitrogen dioxide |
1/5 time |
Plus error |
Produces yellow discoloration |
| Calibration gas generation | Permeation tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.1ppm | - | - |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Yellow
(CH3)2NC6H4CHCl2 + CO2
Reaction Product