Chlorine

A greenish yellow gas and second in the halogen group. It has an irritating smell and a destructive effect on the respiratory system. It is a powerful oxidising agent. It was first used to purify water by William Cruikshank in 1800.

Symbol

Cl

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Atomic number	17		Clip
Atomic / Molecular Weight	35.453	gmol-1	Clip
Density	2030	kgm-3	Clip
Lattice constant	624	fm	Clip
Melting Point	172	K	Clip
Boiling Point	239	K	Clip
Specific heat capacity	477	Jkg-1K-1	Clip
Latent heat of evaporation	281000	Jkg-1	Clip
Ratio of Specific Heats	1.36		Clip
Thermal conductivity	0.0072	Wm-1K-1	Clip
Refractive index	1.000773	at 589.3nm 101.3kPa 0°C	Clip
Refractivity	0.000773		Clip
Bulk Modulus of Rigidity	1100000000	Nm-2	Clip
Viscosity	0.0000129	Nsm-2	Clip
Kinematic Viscosity	6.35467980295567E-09	m2s-1	Clip
Critical Temperature	417	K	Clip
Critical Pressure	7710000	Pa	Clip
Critical Volume	0.000124	m3mol-1	Clip
Electromotive Series	-1.36	V	Clip

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See also: Antichlor, Halide, Halogen, Halon, Periodic Table.