O-Dichlorobenzene C6H4Cl2 NO.127


Performance

Measuring Range

2.5 to 300 ppm

Number of Pump Strokes

2

Correction Factor

1

Sampling Time

1.5 minutes per pump stroke

Detecting Limit

1 ppm (n=2)

Color Change

White Brownish gray

Reaction Principle

o-Dichlorobenzene reacts with iodine pentoxide to liberate
Iodine to discolor the reagent to brownish gray.

Coefficient of Variation 10% (for 2.5 to 10 ppm), 5% (for 30 to 300 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

Aromatic hydrocarbons

-

Plus error

Produce brownish gray

Acetylene

0.2%

-

Produce pale brown
to whole layer

Carbon monoxide

0.1%

-

Ethylene,Esters

0.2%

-

Hexane

0.2%

-

Alcohols, Ketones

1%

Plus error

No discoloration


Other substance measurable with this detector tube

Substance

Correction Factor

Pump Strokes

Measuring Range

m-Dichlorobenzene

1.0

2

2.5 to 300 ppm

p-Dichlorobenzene 1.0 2 2.5 to 300 ppm


Calibration gas generation Diffusion tube method


TLV-TWA TLV-STEL Explosive range
25ppm 50ppm 2.2 to 12%


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