E2608-Cl2
Rev 05.05.2021
Chlorine
Chlorine is a heavy green-yellow gas with a pungent, irritating odor. It is highly toxic and
corrosive. It is used in the chemical industry and for bleaching and disinfection.
Chemical formula
Cl
2
Molar weight
70.9
Relative gas density (to air)
2.44
Conversion
1 ppm = 2.90 mg/m
3
Boiling point
-34.04 °C
Odor
Pungent, irritating smell
Odor detection threshold
Some individuals will not notice the odor until it is more
than three times the exposure limit.
Hazards
Nonflammable, but a strong oxidizer, may react
explosively with many common chemicals.
Potent irritant of the eyes, mucous membrane, skin, and
respiratory system. Death can occur within minutes
after exposure of 400 to 1000 ppm. Chronic exposure of
1 ppm can cause a moderate, but permanent, reduction
in pulmonary function.
Exposure
limits
(Directive
2006/15/EC)
TWA
not specified
STEL
1.5 mg/m
3
/0.5 ppm
IDLH (NIOSH)
10 ppm
Conversion of ppm to mg/m
3
is calculated for 25°C and 1 atm.
3
