Methylcychlohexanone C7H12O NO.155
155


Performance

Measuring Range

2 to 50 ppm

50 to 100 ppm

Number of Pump Strokes

3

2

Correction Factor

1

2

Sampling Time

3 minutes per pump stroke

Detecting Limit

0.2 ppm (n=3)

Color Change

Pale Yellow Yellow

Reaction Principle

Methyl cyclohexanone reacts with 2,4-dinitrophenylhydrazineto
form dinitropnenylhydrazone to produce yellow in color.
C7H12O + C6H3(NO2)2NHNH2 (CH3)2C:NNHC6H3(NO2)2
Coefficient of Variation 15% (for 2 to 10 ppm), 10% (for 10 to 50 ppm)
Shelf Life 2 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)

Substance

Concentration

Interference

Change color by itself

Ketones

 -

Plus error

Discolors to yellow


Calibration gas generation Diffusion tube method


TLV-TWA TLV-STEL Explosive range
50ppm 75ppm 1.15% or higher


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