© 2026 Nanjing Finechem Holdings Co., Ltd,
All Right Reserved
Nickel(II) chloride carries a reputation as a useful chemical compound across a range of industries. The name points directly to its content: nickel in the +2 oxidation state combined with two chloride ions, giving a clear-cut formula of NiCl2. Its appearance jumps out in the lab, especially in its most familiar crystalline form, with a striking yellow-green color. Many people first meet it as a solid, often as crystals or sometimes as flakes or powder, all telling signs of its versatility. It can show up in other forms too—hydrate crystals, pale yellow anhydrous powder, or dissolved in water—each variant bringing something unique to handling and applications.
A company dealing in nickel-based chemicals will likely ship Nickel(II) chloride in several standard formats: hexahydrate crystals, anhydrous powder, solid flakes, or even as pearls. The hexahydrate, with formula NiCl2·6H2O, is especially popular in laboratories and for industrial uses thanks to its ease of dissolution and handling. Some processes need the solution available by the liter, especially in plating or surface treatment industries, where accurate concentrations are key. Physical specifications do not only mean form—it includes density, purity, and granule size for controlled reactions and uses. For hexahydrate crystals, the density stands near 1.9 g/cm3, and the anhydrous variant comes in denser at about 3.55 g/cm3.
Looking beyond its color, Nickel(II) chloride features a straightforward molecular layout. The central nickel ion bonds with two chloride ions in a simple geometric structure, contributing to its reactivity and solubility. People working in chemistry recognize its formula instantly: NiCl2 for the anhydrous form. When hydrated, as in the case of the hexahydrate, it gains six water molecules per formula unit, represented as NiCl2·6H2O. The molar mass tells a lot—129.6 g/mol for the anhydrous and 237.7 g/mol for the popular hexahydrate. Its crystalline, flaky, or powdered forms remind anyone handling it to pay attention to particle size and moisture, as those features influence not just storage but also safety and chemical reactions.
Nickel(II) chloride moves across international borders under the Harmonized System (HS) code: 2827.39. This code streamlines regulatory checks, duties, and compliance, vital when global supply chains move raw chemicals. Any supplier and buyer must note this classification for seamless customs handling and legal documentation, especially as regulatory frameworks tighten around hazardous goods. Fluctuating supply and demand from nickel mining regions also influence price and availability.
In most lab and industrial conditions, Nickel(II) chloride shows up as a solid—frequently as green hexahydrate crystals or in a less common yellow anhydrous form. Its melting point for the anhydrous form hovers close to 1001°C, while the hexahydrate melts much lower, around 140°C as it loses water. Solubility ranks high; just a little agitation in water yields a bright green solution, a sight familiar in electroplating and catalyst preparation. Though it rarely arrives as a true liquid, its solutions by the liter support easy introduction to reaction vessels. Users often favor the flaky or pearled solid for accurate weighing and minimal dust, especially when handling large quantities in reactors or plating baths.
Anyone working with Nickel(II) chloride cannot ignore its hazards. The chemical earns classification as hazardous due to its environmental persistence, toxicity, and links to serious health effects. Prolonged exposure to nickel compounds may lead to dermatitis or much more severe issues, including cancer risks—supported by research from the International Agency for Research on Cancer. Inhalation or ingestion proves harmful, making strong ventilation, protective gloves, and goggles standard for anyone regularly handling the compound. Accidental spillage calls for rigorous cleanup, and waste disposal must meet strict chemical regulations. The European Chemicals Agency and OSHA both earmark Nickel(II) chloride under regulations surrounding safe handling, transport, use, and emergency treatment.
Nickel(II) chloride serves as a key raw material in nickel refining, catalyst production, battery chemistry, and electronics. Its high solubility and reactivity open doors for its use in nickel plating—where even minor deviation from formula or solution purity can shift results. Batteries, especially nickel-cadmium and some emerging chemistries, rely on carefully sourced Nickel(II) chloride to ensure charge and discharge consistency. In catalyst manufacture, the solid or liquid form reacts with other agents to create substances that speed up reactions cleanly. The purity of raw material impacts not just output performance but also safety, so suppliers carry out thorough quality checks before shipment. The chemical’s broad reach into materials science and green energy only adds to its relevance, although its harmful potential keeps researchers searching for safer alternatives or improvements in process recovery.
Daily work with Nickel(II) chloride teaches a lot about the need for clear labeling, sealed containers, and specialized storage to keep everyone safe and protect the environment. Taking small steps—securing containers, working inside fume hoods, and using engineering controls—drastically reduces risks. Some companies and researchers look for nickel recovery and recycling solutions to reduce waste and lower exposure for workers. Innovations in personal protective equipment, better waste collection, and more effective emergency procedures all point toward safer workplaces. As industries lean greener, developing less hazardous alternatives for plating or catalysis—and improving the process for reclaiming nickel—will do more than protect workers; it will keep the value of this raw material high without as much toll on people or the planet.
