2-Butanol CH3CH2CH(OH)CH3 NO.115
115


Performance

Measuring Range

5 to 150 ppm

Number of Pump Strokes

3

Correction Factor

1

Sampling Time

3 minutes per pump stroke

Detecting Limit

1 ppm (n=3)

Color Change

Yellow Pale blue

Reaction Principle

Sec-Butyl alcohol reduces potassium dichromate to form chromicsulfate,
which is blue in color
CH3CH2CH (OH) CH3+ Cr６＋ + H3PO4 Cr3＋
Coefficient of Variation 15% (for 5 to 50 ppm), 10% (for 50 to 150 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)

Substance

Concentration

Interference

Change color by itself

Alcohols

 -

Plus error

Produce similar stain by themselves.


Calibration gas generation Diffusion tube method


TLV-TWA TLV-STEL Explosive range
100ppm - 1.7 to 9.8%

Copyright(c) 2001 GASTEC CORPORATION. All rights reserved.