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Methyl mercaptan (CH3SH)
Item Item Details
(Price is for domestic US market only)
Methyl mercaptan (CH3SH)
Item Name:
Methyl mercaptan (CH3SH)
Item #:
GAS-71H

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Methyl mercaptan CH3SH NO.71H

71H


Performance

Measuring Range

20 to 50 ppm

50 to 1000 ppm

1000 to 2700 ppm

Number of Pump Strokes

2

1

1/2

Correction Factor

0.4

1

2.7

Sampling Time

1 minute per pump stroke

Detecting Limit

2 ppm (n=2)

Color Change

White Yellow

Reaction Principle

2CH3SH +PdSO4 (CH3S)2 Pd+ H2SO4

Coefficient of Variation

10% (for 50 to 200 ppm), 5% (for 200 to 1000 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

Carbon monoxide

-

No effect

No discoloration

Nitrogen dioxide

-

No effect

No discoloration

Hydrogen sulfide

1000 ppm

Plus error

No discoloration

Ethylene

-

No effect

No discoloration

Mercaptans

-

Plus error

Discolors yellow stain


Other substance measurable with this detector tube

Substance

Correction Factor

Pump Strokes

Measuring Range

Ethyl mercaptan

by scale

1

100 to 3800ppm


Calibration gas generation Static gas dilution method


TLV-TWA TLV-STEL Explosive range
0.5ppm - 3.9 to 21.8%


 
Range 20-2700


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