General Description
Blue or emerald-green crystalline material. Toxic and carcinogenic. Two known phases. Alpha-form (blue tetragonal) converts to beta-form (green monoclinic) at 127.9°F. Becomes blue and opaque at room temperature. Odorless. Sweet astringent taste. Somewhat efflorescent. Greenish-yellow anhydrous salt is formed at 536°F.
Reactivity Profile
NICKEL SULFATE HEXAHYDRATE(10101-97-0) is incompatible with strong acids, sulfur, Ni(NO3)2, wood and other combustibles. At elevated temperature undergoes violent reaction with powdered aluminum or magnesium. When heated to decomposition NICKEL SULFATE HEXAHYDRATE(10101-97-0) emits very toxic fumes of oxides of sulfur [Lewis, 3rd ed., 1993, p. 918].
Air & Water Reactions
Water soluble.
Fire Hazard
Flash point data for this chemical are not available. NICKEL SULFATE HEXAHYDRATE is probably combustible.
Chemical Properties
Nickel sulphate hexahydrate is available as odourless, blue-green crystals. It is stable at room temperature in closed containers under normal storage and handling conditions and incompatible with strong acids and strong oxidising agents. On decomposition, nickel (II) sulphate hydroxylate releases oxides of sulphur, irritating and toxic fumes and gases, and nickel oxide.
Uses
Nickel sulfate hexahydrate is a source of nickel metal, a common allergen present in various alloys, electroplated metal, earrings, lipstick holders, watches, buttons,
zippers, rings, utensils, tools, instruments, batteries, machinery parts, working solutions of metal cutting fluids, nickel plating for
alloys, coins, pigments, dentures, orthopedic plates, keys, scissors, razors, spectacle frames, kitchenware etc. May produce erythema
multiforme like eruptions.
Uses
Nickel sulfate hexahydrate is mainly used in Ni plating, as mordant in dyeing and in printing textiles, as a blackening agent for zinc and brass and in the fabrication of organic nickel salts. It is used as an effective catalyst for gas-phase dehydration of glycerol to acrolein. Nickel sulfate hexahydrate crystal is an efficient ultraviolet filter material. Columns used in biochemistry and molecular biology can be regenerated with nickel sulfate. It is used to prepare nickel carbonate, a precursor to pigments and nickel-based catalysts.
Uses
Source of nickel in standards.
Definition
ChEBI: A hydrate that is the hexahydrate of nickel sulfate.