Calibration gas mixture ( SRM (Standard (State) Reference Material))

Calibration gas mixture (SRM)

H2S [  hydrogen sulfide]  +

CH3SH [methanethiol] +

C2H5SH [  ethanethiol] +

C3H7SH [1-Propanethiol ] +

i-C3H7SH [2-Propanethiol(Isopropanethiol)] +

C4H9SH [1-butanethiol] +

i-C4H9SH [2-methyl-1-propanethiol (isobutanethiol)] +

sec-C4H9SH [2-butanethiol] +

tert-C4H9SH [2-methyl-2-propanethiol] +

CH4 [methane]  (bal.)

 

 Cylinder – 5 dm3

SRM Component composition
(TS, State Standard) Component name Content Manufacturing accuracy Analytical accuracy
10538-2014   mole fraction, ppm
Grade: 2 H2S [  hydrogen sulfide]  CAS 7783-06-4 5 1 0.4
  COS [ carbonlyl sulfide]  CAS 463-58-1 5 1 0.4
  CH3SH [methanethiol]  CAS 74-93-1 5 1 0.4
  C2H5SH [  ethanethiol]  CAS 75-08-1 5 1 0.4
  C3H7SH [1-Propanethiol ] CAS 107-03-9 5 1 0.4
  i-C3H7SH [2-Propanethiol(Isopropanethiol)] CAS   75-33-2 5 1 0.4
  C4H9SH [1-butanethiol] CAS 109-79-5 5 1 0.4
  i-C4H9SH [2-methyl-1-propanethiol (isobutanethiol)] CAS 513-44-0 5 1 0.4
  sec-C4H9SH [2-butanethiol]  CAS   513-53-1 5 1 0.4
  tert-C4H9SH [2-methyl-2-propanethiol  CAS   75-66-1 5 1 0.4
  CH4 [methane]  CAS 74-82-8 bal.

 

Cylinder
Material Volume, dm3 Weight, kgs Valve
aluminium 5 stainless steel, left thread DIN477-1

 

State standard 10538-2014