Butyl acetate CH3CO2(CH2)3CH3
(CH3CO2C4H9)		 NO.142L


Performance

Measuring Range

10 to 300 ppm

Number of Pump Strokes

2

Correction Factor

1

Sampling Time

4 minutes per pump stroke

Detecting Limit

2 ppm (n=2)

Color Change

Yellow Blackish brown Light blue after few minutes

Reaction Principle

CH3CO2(CH2)3CH3 + Cr6+ + H2SO4 Cr3+
Coefficient of Variation 15% (for 10 to 100 ppm), 10% (for 100 to 300 ppm)
Shelf Life 2 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

Dark brown (few minutes later)
Pale blue

Ketones

 -

Plus error

Esters

 -

Plus error

Aromatic HCs

 -

Plus error

Other substance measurable with this detector tube

Substance

Correction

No. of Pump Strokes

Measuring Range

Isobuty Acrylate

Factor: 0.26

2

2.6 to 78 ppm

Butyl Acrylate

Factor 0.7

2

7 to 210 ppm


Calibration gas generation Diffusion tube method


TLV-TWA TLV-STEL Explosive range
150ppm 200ppm 1.7 to 7.6%

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