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Sulfuryl Fluoride 1/a

Order No.81 03 471

Dräger sampling tubes and systems - 20351 S

Application Standard Measuring Range: 1 to 5 ppm Number of Strokes n: 6 Time for Measurement: approx. 3 min Standard Deviation: ± 30 % Color Change: light blue light pink Ambient Operating Conditions Temperature: 0 to 40 °CAbsolute Humidity: 15 to 90 % r.h.At 0 to 10 °C, concentrations of sulfuryl fluoride are displayedwith approximately half sensitivity.At 30 to 40 °C and air humidity 2 ppm.At 30 to 40 °C and air humidity > 75 % r. h., concentrations of sulfuryl fluoride are displayed with approximately half sensitivity. Reaction Principle a) pyrolysis sulfuryl fluoride HFb) HF + zircon / quinalizarin pink reaction product (HF destroys the quinalizarin/zircon complex by complexation of the zircon) Cross Sensitivity Fluorinated hydrocarbons are also displayed with different sensitivities. Ammonia and other basic gases could, depending onthe concentrations, either shorten or prevent the color change. Thefollowing chemicals have no influence on the display of 3 ppm sulfuryl fluoride: 2 ppm formaldehyde, 5 ppm methyl bromide and1 ppm phosphine.When the oxygen concentration decreases, the sensitivity decreases. For example, the 3 ppm display at 18 % oxygen is very weak.
ST-418-2008