N

Nickel(II) chloride

IUPAC: dichloronickel

NiCl2 Salts CAS 7718-54-9
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Quick Reference
Formula / NotationNiCl2
CAS Number7718-54-9
Molecular Weight129.60
Melting Point1001 °C
Boiling PointSublimes @ 973 °C; deliquesces
Density3.55 at 59 °F (USCG, 1999) - Denser than water; will sink
SolubilityGreen, deliquescent crystals or crystal powder, monoclinic, structure reported to be trans-(NiCl2(H2O)4.2H2O, sol in about one part water, in alcohol /Hexahydrate/
AppearanceNickel chloride appears as a brown or green colored solid. Denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion. Used to make other chemicals.
Also Known Asdichloronickel; NICKEL CHLORIDE; 7718-54-9; Nickel dichloride; Nickelous chloride; NiCl2; Nickel(2+) chloride; Nickel chloride (NiCl2); Nichel(II) chloride; 37211-05-5
CategorySalts

What is Nickel(II) chloride?

Nickel dichloride is a compound of nickel and chloride in which the ratio of nickel (in the +2 oxidation state) to chloride is 1:2. It has a role as a calcium channel blocker and a hapten.

Formula & Notation

NiCl2

IUPAC Name: dichloronickel

Other Names / Synonyms: dichloronickel; NICKEL CHLORIDE; 7718-54-9; Nickel dichloride; Nickelous chloride; NiCl2; Nickel(2+) chloride; Nickel chloride (NiCl2); Nichel(II) chloride; 37211-05-5

Properties & Characteristics

Appearance: Nickel chloride appears as a brown or green colored solid. Denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion. Used to make other chemicals.. Molecular formula: Cl2Ni. Molecular weight: 129.60 g/mol. Boiling point: Sublimes @ 973 °C; deliquesces. Melting point: 1001 °C. Density: 3.55 at 59 °F (USCG, 1999) - Denser than water; will sink. Solubility: Green, deliquescent crystals or crystal powder, monoclinic, structure reported to be trans-(NiCl2(H2O)4.2H2O, sol in about one part water, in alcohol /Hexahydrate/. Vapor pressure: 1 mm Hg at 671 °C (solid).

Physical Data

PropertyValue
Melting Point1001 °C
Boiling PointSublimes @ 973 °C; deliquesces
Density3.55 at 59 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight129.60
SolubilityGreen, deliquescent crystals or crystal powder, monoclinic, structure reported to be trans-(NiCl2(H2O)4.2H2O, sol in about one part water, in alcohol /Hexahydrate/
AppearanceNickel chloride appears as a brown or green colored solid. Denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion. Used to make other chemicals.

Uses & Applications

Used in food preservation, water treatment, chemical synthesis, fertilizers, and pharmaceutical applications.

Safety Information

Irritant or toxic depending on specific salt. Some salts are oxidising agents or toxic to aquatic environments. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Nickel(II) chloride
Formula NiCl2
CAS Number 7718-54-9
Molecular Weight 129.60
Category Salts
Synonyms dichloronickel; NICKEL CHLORIDE; 7718-54-9; Nickel dichloride; Nickelous chloride; NiCl2; Nickel(2+) chloride; Nickel chloride (NiCl2); Nichel(II) chloride; 37211-05-5

Frequently Asked Questions

Nickel dichloride is a compound of nickel and chloride in which the ratio of nickel (in the +2 oxidation state) to chloride is 1:2. It has a role as a calcium channel blocker and a hapten.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.