Iodine water

Iodine water is the aqueous solution of the halogen iodine .

The following equilibrium reaction occurs:

${\displaystyle \mathrm {I_{2}+2\ H_{2}O\;{\overrightarrow {\leftarrow }}\;HIO+H_{3}O^{+}+I^{-}} }$

Iodine is almost insoluble in water. Under standard conditions, 0.29 g of iodine dissolves in one liter of water . The iodine content depends on the pH value . The hypoiodous acid in iodine water dissociates into H ⁺ ions and IO ^- hypoiodite ions, which can be used as disinfectants .

Since iodine is a radical inhibitor , iodine water can be used to interrupt an ongoing radical substitution .

Together with potassium iodide, the result is Lugol's solution .

See also

• Bromine water
• Chlorinated water (see under chlorine )

Individual evidence

1. ↑ Arnold Willmes; Taschenbuch chemical substances, p. 571; ISBN 978-3817117871 .
2. ↑ Seilnacht: Iodine .
3. ^ Stephanie Grond, Axel Zeeck, Ina Papastavrou, Sabine C. Zeeck; Chemistry for medical professionals; P. 191 ; ISBN 978-3437424434 .