Sulfur dioxide

sulfurous acid anhydride, sulfurous oxide, sulfur oxide, Sulfotep

How to detect Sulfur dioxide

Formula: SO2 | CAS: 7446-09-5

Synonyms: sulfurous acid anhydride, sulfurous oxide, sulfur oxide, Sulfotep

Specification

Specification Value/Information
Formula SO2
CAS no. 7446-09-5
Gas Response Factor, 11.7 eV 1.3
Gas Response Factor, 10.6 eV ZR
Gas Response Factor, 10.0 eV ZR
ppm per mg/m⁻³, (20 °C, 1 bar) 0.375
Molecular Weight, g/mole 64.0
Melting point, °C -75.6
Boiling point, °C -10
Flash point, °C -
Lower Explosive Limit, % -
Density, g.cm⁻³ 1.25
Specification Value/Information
Ionisation Energy, eV 12.3
EH40 TWA, ppm 2
EH40 TWA, mg.m⁻³ 5.3
EH40 STEL, ppm 5
EH40 STEL, mg.m⁻³ 13
NIOSH ST, ppm 3
NIOSH TWA REL, ppm 2
NIOSH ST, mg.m⁻³ 13
NIOSH TWA REL, mg.m⁻³ 5
NIOSH IDLH, ppm 100
OSHA TWA PEL, ppm 5
OSHA TWA PEL, mg.m⁻³ 13

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