Nitratoauric acid

Nitratoauric acid
Names
	IUPAC name Hydrogen tetranitratoaurate(III)
	Other names Gold(III) nitrate; Auronitric acid; Gold(III) hydrogen nitrate; Aurinitric acid;
Identifiers
CAS Number	13464-77-2;
ChemSpider	21241708;
EC Number	236-687-0;
PubChem CID	102601521;
Properties
Chemical formula	HAu(NO3)4
Molar mass	445.99 g/mol (anhydrous); 500.04 g/mol (trihydrate)
Appearance	Brown Crystals
Density	2.84 g/cm3
Melting point	72.6 °C (162.7 °F; 345.8 K)
Solubility in water	Hydrolyzes
Solubility in nitric acid	Insoluble (0 °C); Soluble (30 °C)
Structure
Crystal structure	Monoclinic
Space group	C2/c
Lattice constant	a = 1214.5 pm, b = 854.4 pm, c = 1225.7 pm
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Oxidizing
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H272, H302, H312, H315, H318, H332, H335
Precautionary statements	P210, P220, P221, P261, P280, P302+P352, P304+P340, P305+P351+P338, P332+P313
NFPA 704 (fire diamond)	1 0 2 OX
Related compounds
Other anions	Chloroauric acid
Other cations	Potassium tetranitratoaurate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Nitratoauric acid, hydrogen tetranitratoaurate, or simply called gold(III) nitrate is a crystalline gold compound that forms the trihydrate, HAu(NO₃)₄·3H₂O or more correctly H₅O₂Au(NO₃)₄·H₂O. This compound is an intermediate in the process of extracting gold. In older literature it is also known as aurinitric acid.

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