Health Effects
Sulfur dioxide is extremely irritating to the eyes and respiratory tract.
RTECS Description: Tumorigen, Mutagen, Reproductive Effector, Primary Irritant
Carcinogenicity: IARC/NTC: Not listed as a carcinogen
Exposure Limits:
ACGIH: TLV = (2 ppm)
NIOSH REL = 2 ppm,
STEL= 5 ppm
IDLH = 100 ppm
OSHA: PEL = 5ppm [29 CFR 1910.1000, Table Z-1)
Steri-Trac® SO2 Monitor
Availability: Special Order
Specifications:*
Sensor Type Electrochemical
Range: 0 – 20 ppm
Resolution: 0.1 ppm
Temp Range: -20 to +50 oC
Response time (t90): <15 s
Properties and Applications:
Sulfur dioxide is used as a food preservative, disinfectant, bleaching agent and as a solvent. It is also a common pollutant formed from the combustion of fossil fuels.
Physical Properties:
Chemical Formula: SO2
Physical form: colorless liquid
MP: -72 oC
BP: -10 oC
MW: 64.06 g/mol
Rel. Gas Density: 2.2 (Air = 1)
Odor threshold 0.7 ppm
Classification Numbers:
CAS No.: 7446-09-5
EC No.: 231-195-2
RTECS: WS4550000
*Specifications subject to change
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