Copper(II) nitrate

Not to be confused with Copper(I) nitrate.
Copper(II) nitrate
alpha polymorph[1]
beta polymorph[2]
Names
IUPAC name
Copper(II) nitrate
Other names
Cupric nitrate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.019.853 Edit this at Wikidata
RTECS number
  • GL7875000
UNII
  • InChI=1S/Cu.2NO3/c;2*2-1(3)4/q+2;2*-1 checkY
    Key: XTVVROIMIGLXTD-UHFFFAOYSA-N checkY
  • InChI=1/Cu.2NO3/c;2*2-1(3)4/q+2;2*-1
    Key: XTVVROIMIGLXTD-UHFFFAOYAG
  • [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
Properties
Cu(NO3)2
Molar mass 187.5558 g/mol (anhydrous)
241.60 g/mol (trihydrate)
232.591 g/mol (hemipentahydrate)
Appearance blue-green crystals (anhydrous)
blue crystals (hydrate)
Density 3.05 g/cm3 (anhydrous)
2.32 g/cm3 (trihydrate)
2.07 g/cm3 (hexahydrate)
Melting point 114 °C (237 °F; 387 K) (anhydrous, decomposes)
114.5 °C (trihydrate)
26.4 °C (hexahydrate, decomposes)
Boiling point 170 °C (338 °F; 443 K) (trihydrate, decomposes)
trihydrate:[3]
381 g/100 mL (40 °C)
666 g/100 mL (80 °C)
hexahydrate:[3]
243.7 g/100 mL (80 °C)
Solubility hydrates very soluble in ethanol, ammonia, water; insoluble in ethyl acetate
+1570.0·10−6 cm3/mol (~3H2O)
Structure
orthorhombic (anhydrous)
rhombohedral (hydrates)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant, Oxidizer
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxideSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
1
0
3
OX
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 1 mg/m3 (as Cu)[4]
REL (Recommended)
 TWA 1 mg/m3 (as Cu)[4]
IDLH (Immediate danger)
 TWA 100 mg/m3 (as Cu)[4]
Safety data sheet (SDS) Cu(NO3)2·3H2O
Related compounds
Other anions
 Copper(II) sulfate
Copper(II) chloride
Other cations
 Silver nitrate
Gold(III) nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Copper(II) nitrate describes any member of the family of inorganic compounds with the formula Cu(NO3)2(H2O)x. The hydrates are hygroscopic blue solids. Anhydrous copper nitrate forms blue-green crystals and sublimes in a vacuum at 150-200 °C.[5][6] Common hydrates are the hemipentahydrate and trihydrate.

  1. ^ Cite error: The named reference Wallwork&Addison was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Troyanov was invoked but never defined (see the help page).
  3. ^ a b Perrys' Chem Eng Handbook, 7th Ed
  4. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).
  5. ^ Pass and Sutcliffe (1968). Practical Inorganic Chemistry. London: Chapman and Hall.
  6. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1190. ISBN 978-0-08-037941-8.