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Chlorine
Chlorine
- CAS:
- 7782-50-5
- MF:
- Cl2
- MW:
- 70.91
Properties
- Melting point:
- −101 °C(lit.)
- Boiling point:
- −34 °C(lit.)
- Density
- 1.468（0℃）
- vapor density
- 2.48 (vs air)
- vapor pressure
- 4800 mm Hg ( 20 °C)
- storage temp.
- -20°C
- solubility
- slightly soluble in H2O
- form
- Liquid
- color
- Clear yellow-green
- Odor
- Highly pungent, bleach-like odor detectable at 0.02 to 3.4 ppm (mean = 0.08 ppm)
- Odor Threshold
- 0.049ppm
- Resistivity
- 1E9 μΩ-cm, 20°C
- Water Solubility
- 0.7 g/100 mL
- Merck
- 13,2112
- BRN
- 3902968
- Exposure limits
- TLV-TWA 1 ppm (～3 mg/m3) (ACGIH and MSHA); ceiling 1 ppm (OSHA), 0.5 ppm/ 15 min (NIOSH); IDLH 30 ppm (NIOSH).
- Dielectric constant
- 2.1（-46℃）
- Stability:
- Stable. Incompatible with reducing agents, alcohols.
- LogP
- -0.85 at 20℃
Safety Information
- Symbol(GHS)
GHS03,GHS04,GHS06,GHS09
- Signal word
- Danger
- Hazard statements
- H270-H280-H315-H319-H330-H335-H410
- Precautionary statements
- P273-P302+P352-P304+P340+P310-P305+P351+P338-P403+P233-P410+P403
- Hazard Codes
- T,N,O
- Risk Statements
- 23-36/37/38-50-8
- Safety Statements
- 9-45-61
- RIDADR
- UN 1017 2.3
- OEL
- Ceiling: 0.5 ppm (1.45 mg/m3) [15-minute]
- WGK Germany
- 2
- RTECS
- FO2100000
- DOT Classification
- 2.3, Hazard Zone B (Gas poisonous by inhalation)
- HazardClass
- 2.3
- Toxicity
- LC50 (1 hr) in rats, mice (ppm): 293, 137 (K. C. Back et al., Reclassification of Materials Listed as Transportation Health Hazards (TSA-20-72-3; PB 214-270, 1972) pp A-182-183)
- IDLA
- 10 ppm
Use
Chlorine is used to disinfect water and is part of the sanitation process for sewage and industrial waste. During the production of paper and cloth, chlorine is used as a bleaching agent.
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