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Mercury(II) nitrate
Names
	IUPAC names Mercury dinitrate; Mercury(II) nitrate
	Other names Mercuric nitrate
Identifiers
CAS Number	10045-94-0 ; 7783-34-8 (monohydrate) ;
3D model (JSmol)	Interactive image;
ChemSpider	23247 ;
ECHA InfoCard	100.030.126
EC Number	233-152-3;
PubChem CID	16683796;
RTECS number	OW8225000;
UNII	2FMV9338BW ;
UN number	1625
CompTox Dashboard (EPA)	DTXSID9044162 ;
	InChI InChI=1S/Hg.2NO3/c;22-1(3)4/q+2;2-1 Key: ORMNPSYMZOGSSV-UHFFFAOYSA-N ; InChI=1/Hg.2NO3/c;22-1(3)4/q+2;2-1 Key: ORMNPSYMZOGSSV-UHFFFAOYAS;
	SMILES [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Hg+2];
Properties
Chemical formula	Hg(NO3)2
Molar mass	324.60 g/mol (anhydrous)
Appearance	colorless crystals or white powder
Odor	sharp
Density	4.3 g/cm3 (monohydrate)
Melting point	79 °C (174 °F; 352 K) (monohydrate)
Solubility in water	soluble
Solubility	soluble in nitric acid, acetone, ammonia ; insoluble in ethanol
Magnetic susceptibility (χ)	−74.0·10−6 cm3/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H272, H300, H310, H330, H373, H410
NFPA 704 (fire diamond)	3 0 1 OX
Flash point	Nonflammable
Safety data sheet (SDS)	ICSC 0980
Related compounds
Other anions	Mercury(II) sulfate; Mercury(II) chloride
Other cations	Zinc nitrate; Cadmium nitrate
Related compounds	Mercury(I) nitrate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Mercury(II) nitrate is an inorganic compound with the chemical formula Hg(N O₃)₂. It is the mercury(II) salt of nitric acid HNO₃. It contains mercury(II) cations Hg²⁺ and nitrate anions NO−3, and water of crystallization H₂O in the case of a hydrous salt. Mercury(II) nitrate forms hydrates Hg(NO₃)₂·xH₂O. Anhydrous and hydrous salts are colorless or white soluble crystalline solids that are occasionally used as a reagents. Mercury(II) nitrate is made by treating mercury with hot concentrated nitric acid. Neither anhydrous nor monohydrate has been confirmed by X-ray crystallography.^[1] The anhydrous material is more widely used.^{[clarification needed]}

Uses

Mercury(II) nitrate is used as an oxidizing agent in organic synthesis, as a nitrification agent, as an analytical reagent in laboratories, in the manufacture of felt, and in the manufacture of mercury fulminate.^[2] An alternative qualitative Zeisel test can be done with the use of mercury(II) nitrate instead of silver nitrate, leading to the formation of scarlet red mercury(II) iodide.^[3]

Health information

Mercury compounds are highly toxic. The use of this compound by hatters and the subsequent mercury poisoning of said hatters is a common theory of where the phrase "mad as a hatter" came from.