Iodine, solution 2.5% I2 + 2.5% KI

Molecular formula:
Chemical compound:
Common name:

I – iodine – consists of greyish-black crystals with a purple metallic luster and pungent odor. Its vapor has a characteristic purple color. Iodine mostly exists as diatomic molecules – I2. Iodine easily transitions from its solid to gaseous states and back, bypassing the liquid phase. Iodine is used in forensic science to detect fingerprints on papers such as banknotes; it dissolves primarily in fat deposits left by the fingers, revealing any traces that a perpetrator may have left behind. In medicine, an alcohol solution of iodine is used to disinfect the skin around damaged areas. Furthermore, iodine is categorized as a trace element and is present in all living organisms. It is a component of certain hormones that participate in many aspects of the body’s growth and metabolism

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Hazard information

Hazard statements

  • Harmful in contact with skin.
  • Harmful if inhaled.
  • Causes skin irritation.
  • Very toxic to aquatic life.
  • Causes serious eye irritation.
  • May cause respiratory irritation.
  • Causes damage to organs through prolonged or repeated exposure.

Precautionary statements

  • Avoid release to the environment.
  • Avoid breathing dust/fume/ gas/mist/vapours/spray.
  • Wear protective gloves/protective clothing/eye protection/face protection.
  • Get medical advice/attention if you feel unwell.
  • IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing.