Mercury(II) nitrate

Quecksilberpernitrat

• Hg (NO3) 2
• Hg (NO3) 2 · H2O (monohydrate)

White solid

• 324.60 g · mol -1 ( anhydrous)
• 342.62 g.mol -1 ( monohydrate)

Fixed

4.3 g · cm -3 ( monohydrate)

79 ° C ( anhydrous)

Decomposition

Hydrolysis in water

Risk

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Mercury (II ) nitrate is the salt of the divalent mercury and nitric acid has the chemical formula Hg ( NO3 ) 2 It belongs to the class of nitrates.

Production

Solutions of mercury (II ) nitrate can be prepared by reaction of elemental mercury with hot, concentrated nitric acid manufacture. To avoid the precipitation of hydrolysis, the solution must be kept acidic. Evaporation arise octahydrate crystals of Hg ( NO3) 2.8 H2O.

Properties

Mercury (II ) nitrate is white crystals having a melting point of 79 ° C. Commercially, it is usually available as a monohydrate.

Use

Mercury (II ) nitrate was used previously in the manufacture of the felt and for the treatment of skins. About the arising of washes production effluents it came often to the environment. Due to its high toxicity and environmental impact, it is no longer used for these purposes.

Safety

The water-soluble mercury salt is mercury (II ) nitrate if swallowed rapidly absorbed and is therefore classified as very toxic. Even at low contact, inhalation of dust or skin contact medical help is immediately needed. In the body it shows cumulative properties

Mercury nitrate is very harmful to the biological balance in the aquatic environment. Therefore, it must not be discharged into the environment.

How many inorganic nitrates is mercury nitrate oxidant. Therefore, it can react violently or even explosively in contact with combustible organic substances, such as hydrocarbons, alcohols, but also with reducing agents.