373-02-4

Basic information

• Product Name: Nickelous acetate
• Synonyms: nickel(ii)acetate(1:2);NICKEL(II) ACETATE R. G.;NICKELACETATE,ANHYDROUS;NICKELOUS(II)ACETATE;Nickel diacetate;Nickel(II) acetate;Nickelous acetate;Nickel Acetate, 4-Hydrate
• CAS NO: 373-02-4
• Molecular Formula: 2C₂H₃O₂*Ni
• Molecular Weight: 176.78
• EINECS: 206-761-7
• Product Categories: Organic-metal salt
• Mol File: 373-02-4.mol

Chemical Properties

• Melting Point: 1555°C
• Boiling Point: 16.6°C
• Flash Point: 40 °C
• Appearance: /solid
• Density: 9.50 lb/gal
• Water Solubility: 177g/L at 20℃
• CAS DataBase Reference: Nickelous acetate(CAS DataBase Reference)
• NIST Chemistry Reference: Nickelous acetate(373-02-4)
• EPA Substance Registry System: Nickelous acetate(373-02-4)

Safety Data

• Hazardous Substances Data: 373-02-4(Hazardous Substances Data)

Usage

Uses

1. Used in Catalyst Applications:
Nickelous acetate is utilized as a catalyst in various chemical reactions, enhancing the rate of these processes and improving overall efficiency.
2. Used in Textile Industry (Dye Mordant):
In the textile industry, Nickelous acetate serves as a dye mordant, which helps to bind dyes to textile fibers, ensuring colorfastness and improving the quality of the final product.
3. Used in Electroplating Nickel:
Nickelous acetate is employed in the electroplating process to deposit a layer of nickel onto various surfaces, providing enhanced durability, corrosion resistance, and aesthetic appeal.
4. Used in Sealing Anodized Aluminum:
As a sealer for anodized aluminum, Nickelous acetate helps to protect the anodic coating, ensuring its longevity and maintaining the integrity of the aluminum surface.
Physical Properties:
The tetrahydrate form of Nickelous acetate is a green crystalline solid with a density of 1.744 g/cm3.
It has an odor of acetic acid and a sweet taste.
Upon heating, it loses water to form a yellow-green powder of anhydrous nickel acetate.
Decomposes above 250°C and is soluble in water (17g/100mL at 20°C) and sparingly soluble in alcohol.
Chemical Properties:
Nickelous acetate crystallizes from solutions of the hydroxide in acetic acid at room temperature as the green tetrahydrate.
It has a distorted octahedral structure with the nickel atoms surrounded by four water molecules and two oxygens from two acetato groups, which are trans to each other.
Its magnetic moment is 3.30 BM at room temperature.
The anhydrous form is obtained by dehydration of the tetrahydrate in vacuo or by heating the tetrahydrate under reflux with acetic anhydride.
Upon thermal decomposition in nitrogen (or in vacuo) at 300°, it evolves acetone, acetic acid, carbon monoxide, carbon dioxide, and water, leaving nickel and N13C.
Nickelous acetate forms green, monoclinic crystals and effloresces somewhat in air, being soluble in both water and alcohol.

Preparation

Nickel acetate is prepared by reacting nickel hydroxide or nickel carbonate with dilute acetic acid. The tetrahydrate is crystallized from solution. Ni(OH)2 + 2CH3COOH → (CH3COO)2Ni + 2H2O NiCO3 + 2CH3COOH → (CH3COO)2Ni + CO2 + 2H2O On heating, the solution hydrolyzes depositing nickel hydroxide.

Air & Water Reactions

Water soluble.

Reactivity Profile

Nickelous acetate is a green, crystalline material, mildly toxic and carcinogenic. Combustible when exposed to heat or flame. When heated to decomposition Nickelous acetate emits acrid smoke and irritating fumes [Lewis, 3rd ed., 1993, p. 909].

Hazard

Toxic by ingestion, a carcinogen (OSHA).

Health Hazard

Inhalation causes irritation of nose and throat. Ingestion causes vomiting. Contact with eyes causes irritation. May cause dermatitis in contact with skin.

Flammability and Explosibility

Nonflammable

Safety Profile

Confirmed carcinogen with experimental neoplastigenic and tumorigenic data. Poison by ingestion, intraperitoneal, and subcutaneous routes. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits irritating fumes. See also NICKEL COMPOUNDS.

Safety

Nickel salts are carcinogenic and irritate the skin.

InChI:InChI=1/C2H4O2.Ni/c1-2(3)4;/h1H3,(H,3,4);/q;+2/p-1

Upstream product

• 108-24-7 acetic anhydride 
• 1295-35-8 bis(1,5-cyclooctadiene)nickel ⁽⁰⁾ 
• 108-05-4 vinyl acetate 
• 127-08-2 potassium acetate 
• 6018-89-9 nickel(II) acetate tetrahydrate 
• 7664-41-7 ammonia 
• 127-09-3 sodium acetate 
• 7440-02-0 nickel 
• 64-19-7 acetic acid 
• 719261-06-0 nickel(II) carbonate 
• 83864-14-6 nickel dichloride 
• 591-87-7 Allyl acetate 
• 15133-82-1 tetrakis(triphenylphosphine)nickel⁽⁰⁾ 
• 481711-38-0 Ni(3,3',5,5'-tetramethyl-4,4'-dibutyldipyrrolylmethene-2,2'(-1H))2 

Downstream Products

• 3615-17-6 N-acetyl-D-mannosamine 
• 7512-17-6 2-acetamido-2-deoxy-D-glucose 
• 111-65-9 octane 
• 373-02-4 nickel(III) acetate 
• 25714-71-0 4-hydroxybutyraldehyde 
• 572-45-2 benzil dioxime 
• 3893-33-2 benzil monoazine 
• 97-61-0 2-Methylpentanoic acid 
• 142-62-1 hexanoic acid 
• 7440-02-0 nickel 

Relevant articles and documents

Late-Stage Derivatization of Buflavine by Nickel-Catalyzed Direct Substitution of a Methoxy Group via C-O Bond Activation

The nickel-catalyzed cross-coupling of methoxyarenes was applied to buflavine, which allows for the selective monosubstitution of one of the two methoxy groups in the molecule, leading to the formation of 2- and 3-substituted isomers. Trimethylsilylmethyl (TMSCH 2), phenyl, and alkynyl groups can be introduced into buflavine using this method. The resulting TMSCH 2analogue of buflavine can also be converted into several other derivatives.

Recyclable and Stable α-Methylproline-Derived Chiral Ligands for the Chemical Dynamic Kinetic Resolution of free C,N-Unprotected α-Amino Acids

A novel special designed, stable, and recyclable chiral ligand bearing a quaternary carbon was developed for chemical dynamic kinetic resolution (DKR) of free C,N-unprotected racemic α-amino acids via Schiff base intermediates. This method furnishes high yields with excellent enantioselectivity, has a broad substrate scope, and uses operationally simple and convenient conditions. The present chemical DKR is a practical and useful method for the preparation of enantiopure α-amino acids.

Synthesis and characterization of unique nickel(II) carboxylates and their coordination complexes

Direct anodic dissolution of nickel metal and cathodic reduction of carboxylic acids (RCOOH) in acetonitrile has proved to be a simple and efficient one-step route to synthesize unique polymeric nickel(II) carboxylate complexes, {Ni(OOCR)2}n in H-type glass Pyrex cell. When the oxidation was carried out in the presence of neutral ligands (L) such as 2,2’-bipyridyl or 1,10-phenanthroline, the complexes of type {Ni(OOCR)2.L}n were obtained. Tetrabutylammonium chloride has been used as a supporting electrolyte in order to increase the electrolytic conductivity of the electrochemical system which in turn affects the current efficiency, cell voltage and energy consumption in the electrolytic cell. The complexes have been characterized by vibrational spectra, CHN elemental analysis, solubility and melting points shows a good agreement with the structure. The result also shows that the direct electrochemical synthetic technique has high current efficiency, extra purity and yield.

The Kinetics of Growth of Metallo-supramolecular Polyelectrolytes in Solution

Several transition metal ions, like Fe2+, Co2+, Ni2+, and Zn2+ complex to the ditopic ligand 1,4-bis(2,2′:6′,2′′-terpyridin-4′-yl)benzene (L). Due to the high association constant, metal-ion induced self-assembly of Fe2+, Co2+, and Ni2+ leads to extended, rigid-rod like metallo-supramolecular coordination polyelectrolytes (MEPEs) even in aqueous solution. Here, we present the kinetics of growth of MEPEs. The species in solutions are analyzed by light scattering, viscometry and cryogenic transmission electron microscopy (cryo-TEM). At near-stoichiometric amounts of the reactants, we obtained high molar masses, which follow the order Ni-MEPE≈Co-MEPEa reversible step-growth mechanism. The forward polymerization rate constants follow the order Co-MEPEFe-MEPENi-MEPE and the growth of MEPEs can be accelerated by adding potassium acetate.

Preparation method of battery grade nickel acetate

The invention relates to a preparation method of battery grade nickel acetate, and aims at providing a preparation method of battery grade nickel acetate, which is simple in production principle and wide in raw material source and facilitates industrial production. The preparation method of the battery grade nickel acetate comprises the following steps: metallic nickel powder and an acid copper chloride solution react, impurity removal and evaporation are carried out, and NiCl2 is obtained; NiCl2 is mixed with a sodium hydroxide solution fully, after filtration, Ni(OH)2 is obtained, nickelous hydroxide is washed and then is acidified by acetic acid, and nickel acetate is generated finally. The nickel acetate prepared by the preparation method is high in purity. The preparation method is applied to the technical field of chemical production.

A coarse granular nickel acetate method of crystallizing

The invention discloses a crystallization method of coarse particle nickel acetate. A nickel acetate crystal obtained through evaporating and condensing of a nickel acetate solution, adding of glacial acetic acid to regulate pH, cooling and crystalizing is regular in crystal form, as well as coarse, large and uniform in particles, and the crystal with the length between 0.5-1.0mm accounts for more than 75%. The process is simple and reliable, and is strong in operability. The nickel acetate product produced through the process is coarse and large in particle, dust pollution is avoided in the use process, and the physical and psychological health of an operator is not jeopardized.

Ni(II) complex extended structures sustained by hydrogen bonding, φ-φ and C-HφInteractions

The complex [Ni(NAA)2 (im)6](1) (where H 2NAA = α-naphthylacetic acid and im = imidazole) has been synthesized under solvothermal conditions. The complex fully characterized by IR spectroscopy, elemental analysis and single crystal X-ray diffraction. In complex 1, Ni(II) is coordinated by six N atoms with a octahedral coordination geometry. This mononuclear complex is further extended into threedimensional structure via φ-φ, C-Hφand hydrogen bonding interactions. The thermal stable property of complex 1 is also reported.

Protolytic dissociation mechanisms and comparative acid stabilities of palladium(II), zinc(II), copper(II), and nickel(II) complexes of alkylated dipyrrins

Complexes of Pd(II), Cu(II), Ni(II), and Zn(II) with alkylated dipyrrins (Hdpm) were synthesized and characterized by physicochemical and spectroscopic methods. Protolytic dissociation kinetics of these complexes in benzene in the presence of acetic and trichloroacetic acid was studied. A protonated dipyrrin is the reaction product of protolytic dissociation of the complexes in acid solutions. The observed and true dissociation rate constants, as well as activation reaction parameters, were calculated. Kinetic models of the processes are proposed, and the patterns of influence of the ligand nature on dissociation kinetics were determined. The Pd(II) complexes proved to be much more stable than other those of the other metals, according to the results of the kinetic studies. The lability of the complexes strongly depends on the length and position of the alkyl substituent of the ligand. The dissociation of the Ni(II) complex gives a heteroligand complex at low concentrations of acid, but the complex undergoes full protolytic dissociation at higher concentrations of acid. The dissociation of the complex of Cu(II) is an equilibrium process, involving formation of the protonated form of the ligand.

Reduction and hydrogenation of a diazene by a (β-diketiminato)nickel hydrazide

A (β-diketiminato)nickel(II) hydrazido(1-) complex [L tBuNi-(η2-N2H3)], {1, L tBu = [HC(CtBuNC6H3{iPr}2) 2]-} has been obtained by treatment of [LtBuNiBr] with hydrazine. In a reaction of 1 with two equivalents of the azo compound diisopropyl azodicarboxylic ester (adc-OiPr) the Ni(N2H3) entity acts as both a hydrogenating and a reducing agent: diisopropyl hydrazidodicarboxylate (hdc-OiPr) is formed, and more adc-OiPr is reduced by two electrons. The resulting (adc-OiPr)2- is found as a ligand in the ultimate nickel product complex, the trinuclear nickel(II) compound [L tBuNi(μ-adc-OiPr)Ni(μ-adc-OiPr)NiLtBu] (2), in which two LtBuNi+ units are linked by a [NiII(adc- OiPr)2]2- moiety. The hypothesis that L tBuNiI species are acting as intermediates was supported by the independent finding that 2 can also be obtained by reaction of [L tBuNi(OEt2)] with adc-OiPr.

Kinetic stability of complexes of some d-metals with 3,3'- bis(dipyrrolylmethene) in the binary proton-donor solvent acetic acid-benzene

The kinetics of dissociation of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) binuclear homoleptic double-stranded helicates with bis(2,4,7,8,9- pentametyldipyrrolylmethen-3-yl)methane (H2L) of the [M 2L2] composition