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Trichloroethylene (Cl2C:CHCl)
Item Item Details
(Price is for domestic US market only)
Trichloroethylene (Cl2C:CHCl)
Item Name:
Trichloroethylene (Cl2C:CHCl)
Item #:

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Trichloroethylene Cl2C:CHCl NO.132M


Measuring Range

2 to 5ppm

5 to 100ppm

100 to 250ppm

Number of Pump Strokes




Correction Factor




Sampling Time

1 minute per pump stroke

Detecting Limit

0.4 ppm (n=2)

Color Change

Yellow Reddish Purple

Reaction Principle

Trichloroethylene is decomposed by nascent oxygen by oxidizing agent
to liberate hydrogen chloride which discolors indicator to reddish purple.

Cl2C:CHCl + PbO2 + H2SO4 HCl
HCl + Basic Compound Chloride

Coefficient of Variation 10% (for 5 to 20 ppm), 5% (for 20 to 100 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)




Change color by itself

Nitric Oxide, Nitrogen dioxide


No effect

No discoloration

Hydrogen chloride, Chlorine, Bromine


Plus error

Produce reddish purple stain


200 ppm

No effect

No discoloration

Unsaturated Halogenated HCs


Plus error

Produces reddish purple stain

Aromatic hydrocarbons


Minus error

No discoloration

Calibration gas generation Diffusion tube method

TLV-TWA TLV-STEL Explosive range
50ppm 100ppm -
Range 2-250

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