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Methacrylonitrile (CH2:C(CH3)CN)
Item Item Details
(Price is for domestic US market only)
Methacrylonitrile (CH2:C(CH3)CN)
Item Name:
Methacrylonitrile (CH2:C(CH3)CN)
Item #:
GAS-192

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Methacrylonitrile CH2:C(CH3)CN NO.192

192


Performance

Measuring Range

0.2 to 0.5 ppm

0.5 to 10 ppm

10 to 32 ppm

Number of Pump Strokes

4

2

1

Correction Factor

0.4

1

3.2

Sampling Time

2 minutes per pump stroke

Detecting Limit

0.1 ppm (n=4)

Color Change

Yellow Red

Reaction Principle

Acrylonitrile is decomposed by acid to liberate hydrogen cyanide
which react with mercuric chloride to generate hydrogen chloride
The generated hydrogen chloride discolors indicator to red.
Coefficient of Variation 10% (for 0.5 to 4 ppm), 5% (for 4 to 10 ppm)
Shelf Life 3 Years
Corrections for
temperature & humidity
Unnecessary
Store the tubes at cool and dark place.


Possible coexisting substances and their interferences (NOTE)

Substance

Concentration

Interference

Change color by itself

Nitriles (C3)

-

Plus error

Discolors red stain

Acetone cyanohidrin

-

Plus error

Discolors red stain

Alcohols, Esters, Ketones

20 ppm Minus error

No discoloration

Aromatic hydrocarbons

20 ppm Minus error

No discoloration

Hydrogen chloride,
Hydrogen cyanide

-

No effect

No discoloration


Calibration gas generation Diffusion tube method


TLV-TWA TLV-STEL Explosive range
- - -
 
Range 0.2-32


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