List of Reactive & Non-Reactive Gases

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Categories: Gas Detection

Reactive gases are defined as gases which, because of their high chemical activity, are easily sorbed (adsorbed) by the exposed surfaces of gas detection systems including detector housings, calibration adapters, and remote sample draw accessories (tubing). Because of their greater tendency to be depleted from a gas sample by the exposed surfaces of gas detection systems, special care must be taken to ensure accurate monitoring results. The principal danger is that failure to use compatible materials and proper calibration procedures can result in dangerously inaccurate (low) readings and increased response times.

Unlike non-reactive gases, reactive gases require higher flow (they will use a 1.0 LPM regulator, instead of a 0.5 LPM) and need corrosion-resistant equipment as corrosive and sticky (stainless steel regulators and Teflon tubing). H2S represents no considerable reactivity.

A list of Reactive and Non-Reactive Gases to help when choosing Calibration or Bump test gas cylinders and accessories.

Compound  Chemical FormulaType
Hydrogen SulphideH2SReactive
Sulphur DioxideSO2Reactive
Nitric OxideNOReactive
Nitrogen DioxideNO2Reactive
AmmoniaNH3Reactive
ChlorineCl2Reactive
Hydrogen ChlorideHClReactive
Ethylene OxideC2H4O (ETO)Reactive
Carbonyl SulphideCOSReactive
Methyl MercaptanCH3SHReactive
Ethyl MercaptanC2H5SHReactive
Propyl MercaptanC3H7SHReactive
Butyl MercaptanC4H9SHReactive
Hydrogen CyanideHCNReactive
SilaneSiH4Reactive
PhosphinePH3Reactive
NitrogenN2Non-Reactive
OxygenO2Non-Reactive
MethaneCH4Non-Reactive
HeliumHeNon-Reactive
Carbon DioxideCO2Non-Reactive
HydrogenH2Non-Reactive
Carbon MonoxideCONon-Reactive
Nitrous OxideN2ONon-Reactive
Sulphur HexafluorideSF6Non-Reactive
ArgonArNon-Reactive
AcetyleneC2H2Non-Reactive
EthyleneC2H4Non-Reactive
EthaneC2H6Non-Reactive
PropyleneC3H6Non-Reactive
PropaneC3H8Non-Reactive
Iso-Butanei-C4H10Non-Reactive
ButaneC4H10Non-Reactive
1-Butene1-C4H8Non-Reactive
cis-2-Butenecis-2,C4H8Non-Reactive
trans-2-Butenetrans-2-C4H8Non-Reactive
1-3, Butadiene1,3-C4H6Non-Reactive
1,2, Butadiene1,2-C4H6Non-Reactive
PentaneC5H12Non-Reactive
n-Pentanen-C5H12Non-Reactive
Iso-Pentanei-C5H12Non-Reactive
neo-Pentanen-C5H12Non-Reactive
HexaneC6H14Non-Reactive
Vinyl ChlorideC2H3ClNon-Reactive
HeptaneC7H16Non-Reactive
OctaneC8H18Non-Reactive
NonaneC9H20Non-Reactive
DecaneC10H22Non-Reactive
UndecaneC11H24Non-Reactive
DodecaneC12H26Non-Reactive
TridecaneC13H28Non-Reactive
TetradecaneC14H30Non-Reactive
PentadecaneC15H32Non-Reactive
HexadecaneC16H34Non-Reactive
BenzeneC6H6Non-Reactive
TolueneC6H5-CH3Non-Reactive
XyleneC8H10Non-Reactive
EthylbenzeneC8H10Non-Reactive
EthanolC2H5OHNon-Reactive
MethanolCH3OHNon-Reactive
Iso-Butylenei-C4H8Non-Reactive
RefrigerantsvariousNon-Reactive