Nickel(II) chloride

Nickel chloride
Nickel(II) chloride hexahydrate
Hexahydrate

Anhydrous
Names
IUPAC name
Nickel(II) chloride
Other names
Nickelous chloride, nickel(II) salt of hydrochloric acid
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.028.858 Edit this at Wikidata
EC Number
  • 231-743-0
KEGG
RTECS number
  • QR6480000
UNII
UN number 3288 3077
  • InChI=1S/2ClH.Ni/h2*1H;/q;;+2/p-2 checkY
    Key: QMMRZOWCJAIUJA-UHFFFAOYSA-L checkY
  • InChI=1/2ClH.Ni/h2*1H;/q;;+2/p-2
    Key: QMMRZOWCJAIUJA-NUQVWONBAR
  • anhydrous: [Ni+2].[Cl-].[Cl-]
  • hexahydrate: Cl[Ni-4](Cl)([OH2+])([OH2+])([OH2+])[OH2+].O.O
Properties
NiCl2
Molar mass 129.5994 g/mol (anhydrous)
237.69 g/mol (hexahydrate)
Appearance yellow-brown crystals
deliquescent (anhydrous)
green crystals (hexahydrate)
Odor odorless
Density 3.55 g/cm3 (anhydrous)
1.92 g/cm3 (hexahydrate)
Melting point 1,001 °C (1,834 °F; 1,274 K) (anhydrous)
140 °C (hexahydrate)
anhydrous
67.5 g/100 mL (25 °C) [1]
87.6 g/100 mL (100 °C)
hexahydrate
282.5 g/100 mL (25 °C) [1]
578.5 g/100 mL (100 °C)
Solubility 0.8 g/100 mL (hydrazine)
soluble in ethylene glycol, ethanol, ammonium hydroxide
insoluble in ammonia, nitric acid
Acidity (pKa) 4 (hexahydrate)
+6145.0·10−6 cm3/mol
Structure
Monoclinic
octahedral at Ni
Thermochemistry
107 J·mol−1·K−1[2]
−316 kJ·mol−1[2]
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Very toxic (T+)
Irritant (Xi)
Dangerous for the environment (N)
Carcinogen
GHS labelling:
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Danger
H301, H315, H317, H331, H334, H341, H350i, H360D, H372, H410
P201, P202, P260, P261, P264, P270, P271, P272, P273, P280, P281, P285, P301+P310, P302+P352, P304+P340, P304+P341, P308+P313, P311, P314, P321, P330, P332+P313, P333+P313, P342+P311, P362, P363, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
0
0
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
105 mg/kg (rat, oral)[3]
Safety data sheet (SDS) Fischer Scientific
Related compounds
Other anions
 Nickel(II) fluoride
Nickel(II) bromide
Nickel(II) iodide
Other cations
 Palladium(II) chloride
Platinum(II) chloride
Platinum(II,IV) chloride
Platinum(IV) chloride
Related compounds
 Cobalt(II) chloride
Copper(II) chloride
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 ?)

Nickel(II) chloride (or just nickel chloride) is the chemical compound NiCl2. The anhydrous salt is yellow, but the more familiar hydrate NiCl2·6H2O is green. Nickel(II) chloride, in various forms, is the most important source of nickel for chemical synthesis. The nickel chlorides are deliquescent, absorbing moisture from the air to form a solution. Nickel salts have been shown to be carcinogenic to the lungs and nasal passages in cases of long-term inhalation exposure.[4]

  1. ^ a b Lide, David S. (2003). CRC Handbook of Chemistry and Physics, 84th Edition. CRC Press. pp. 4–71. ISBN 9780849304842.
  2. ^ a b Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A22. ISBN 978-0-618-94690-7.
  3. ^ "Nickel metal and other compounds (as Ni)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ^ Grimsrud, Tom K; Andersen, Aage (2010). "Evidence of carcinogenicity in humans of water-soluble nickel salts". Journal of Occupational Medicine and Toxicology. 5 (1): 7. doi:10.1186/1745-6673-5-7. PMC 2868037. PMID 20377901.