Zinc Cyanide
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Project at a Glance Contents on the CD ROM
  • Zinc cyanide is the inorganic chemical compound with the formulaZn(CN)2. It adopts a polymeric structure consisting of tetrahedral zinc centers linked by bridging cyanide ligands.
  • It is a white solid that is used mainly for electroplating zinc but also has more specialized applications for the synthesis of organic compounds.
  • Zn(CN)2 is employed as a catalyst for the cyanosilylation of aldehydes and ketones.
  • It is also used to introduce the formyl group in organic synthesis. 2-Hydroxy-1-naphthaldehyde has been prepared from 2-naphthol, zinc cyanide, and anhydrous hydrogen chloride.
  • Zn(CN)2 is insoluble in most solvents. The solid dissolves in, or more precisely, is degraded by, aqueous solutions of basic ligands such as hydroxide, ammonia, and additional cyanide to give anionic complexes.
  • Zn(CN)2 is fairly easy to make because combining aqueous solutions of cyanide and zinc ions. For commercial applications, some effort is made to avoid halide impurities by using zinc acetates.
  •  Zinc cyanide is a byproduct of certain gold extraction methods. To isolate gold from aqueous gold cyanide, some procedures call for the addition of zinc: 2 [Au(CN)2]- + Zn ? 2 Au + Zn(CN)2 + 2 CN-
  • It is free from impurities and safe to use. It is fabricated using high quality material in accordance with the international quality standard.
  • It finds application in diverse industry and can be availed as per the specific requirement of the clients.
  • It adopts a polymeric structure consisting of tetrahedral zinc centers linked by bridging cyanide ligands. The structure can also be described as being two interpenetrating adamantine structures.
  • The cyanide group shows head to tail disorder with any zinc atom having between 1 and 4 carbon neighbors and the remaining being nitrogen atoms. It shows one of the largest negative coefficients of thermal expansion, beating the previous largest zirconium tungstate.
  • Zinc Cyanide complex was found to be particularly acceptable due to it is preferred by the strong base resin groups to gold and silver complexes, it is readily decomposed by a mildly acidic solution so that zinc and cyanide ions removed while the resin is regenerated for further use, and zinc is a metal which is compatible with most cyanide circuits using the Merrill-Crowe technology.
    One of the first methods employed a zinc cyanide solution which is passed through a resin bed.
  • The rich solution obtained can be sent to a Merrill-Crowe process or electro winning, and the zinc cyanide solution can be recycled to elution. In this method all the anionic cyanide complexes are eluted efficiently and the resin can be regenerated to full capacity each cycle with efficient recycle of chemicals.
  • The molar solubility of zinc cyanide, Zn(CN)2, in a 0.15M Zn(NO3)2 solution at 25°C is 2.2 × 10-8 mol L-1. All the solutes that are dissolved are 100% dissociated. The value of Ksp for zinc cyanide is
    Ksp = [Zn2+(aq)] x [CN-(aq)]^2
    In this solution, [Zn2+(aq)] = (0.15 + 2.2 x 10^-8) which can be approximated to 0.15 mol/L and [CN-(aq)] = 4.4 x 10^-8 mol/L , (since 1 mole of Zn(CN)2 contains 2moles of CN-) So, Ksp = 0.15 x (4.4 x 10^-8)^2 = 2.9 x 10-16 (mol/L)^3 Molar mass of Zn(CN)2 = 117.4438 g/mol.
  • A method of removing complexed zinc-cyanide from wastewater involving a multiple stage process including, in a first step, control of ferrous ions to a critical minimum concentration of 250 to 400ppm, together with pH control in the first and also a second step, together with recycling of a portion of sludge precipitated in the process.
  • Improved sludge stability is achieved by aeration to oxidize precipitated ferrous hydroxide to ferric hydroxide, immediately before settling the sludge in a thickener.

  • Zinc cyanide application.
  • Zinc cyanide structure.
  • Zinc cyanide solution.
  • Health hazard assessments for zinc cyanide.
  • Cautionary response information for zinc cyanide.
  • Chemical and physical information for zinc cyanide.
  • Fact sheet for zinc cyanide.


  • Chemical product and identification.
  • Zinc cyanide Msds
  • Zinc cyanide data sheet
  • Gold Etch tfac
  • Zinc cyanide safety data sheet
  • Data sheet for zinc cyanide
  • Safety sheet for zinc cyanide
  • Msds for zinc cyanide


  • Product sheet for zinc cyanide
  • Vision plus non-cyanide zinc plating process
  • Zincbrite 47 bright zinc process
  • zincbrite 20 new brightener bright zinc process
  • Zinc cyanide specification

Manufacturing process

  • Electro deposition of zinc and zinc alloys
  • Synthesis and Spectroscopic Characterization of  cyanide Substituted Bipyridyl
    Complexes of Ru(II)
  • Zinc Electroplating
  • Design and synthesis of complementing ligands for mutant
    thyroid hormone receptor TRb(R320H): a tailor-made
    approach toward the treatment of resistance to thyroid hormone
  • New Method for Synthesis of 3-(4-hydroxy-3-methoxyphenyl) prop-2-enoic acid and
    1- feruloyl-β-D-glucose
  • Photo electrochemical cells using n-type ZnSe electrodes in aqueous electrolytes
  • All You Need to Know About Asymmetric
    Phase Transfer Catalysis (PTC)
  • Cyanosilylation of carbonyl compounds

Raw material suppliers

  • Zinc
  • Gold cyanide


  • Suppliers of china.
  • List1 of manufacturers.
  • List2 of manufactures.
  • List of suppliers.
  • List of exporters
  • Suppliers of ludhiana
  • Online1suppliers
  • Onlline2 suppliers
  • List1 of exporters
  • List2 of exporters


  • Synthesis and Spectroscopic Characterization of CN-Substituted Bipyridyl
    Complexes of Ru(II)
  • Design and synthesis of complementing ligands for mutant
    thyroid hormone receptor TRb(R320H): a tailor-made
    approach toward the treatment of resistance to thyroid hormone
  • Photo electrochemical cells using n-type znse electrodes in aqueous electrolytes

  • New Method for Synthesis of 3-(4-hydroxy-3-methoxyphenyl) prop-2-enoic acid and
    1- feruloyl-β-D-glucose

  • Zinc Electroplating

  • Electrodeposition of zinc and zinc alloys
  • Phase Transfer Catalysis


  • Demonstration of Zinc
    Cyanide Recovery Using
    Reverse Osmosis and
  • Superior plating/plating inc. application project to evaluate
    a total rinse recycle and reclamation system provided by water technologies.
  • Ferrate(VI) oxidation of zinc–cyanide complex.
  • Recovery of metal cyanides using a fluidized bed of
  • Pollution Prevention in the Plating Process.

Company profiles

  • Company from Angola.
  • Company from China.
  • Company from India.
  • Company from Gujarat.
  • Company from Mumbai
  • Company from thane.


  • Consultancy from India1.
  • Consultancy from India2.
  • Consultancy from USA.
  • Consultancy from South Korea.


  • Removal of complexed zinc-cyanide from wastewater with improved sludge stability.

  • Zinc cyanide electroplating bath and process.

  •  Method and electrolyte for electroplating brass.

  • Bacterial-assisted heap leaching of ores.

  • Methods of electroplating zinc and cyanide free or low cyanide zinc plating baths.

  • Use of N-acetyl-cysteine and derivatives for regulating skin wrinkles and/or skin atrophy.

  • Method for metal and cyanide recovery from plating baths and rinse waters.

  • Removal of heavy metal ions from plating wastes.

  • Methods for mine tailing clean-up using recovery technologies.


  • Cyanide recovery.
  • Preliminary data search report for locating and estimating air emissions from sources of cyanide compounds.
  • Complexes formed by zinc and cyanide ions at elevated pH.
  • Treatment of plating wastewaters containing metal cyanide. complexes by a gas membrane-ion exchange process.
  • Zinc Cyanide Plating Rinse Reclamation A Case Study of Advanced Reverse Osmosis Compared with Centralized Ion Exchange.
  • Report for zinc cyanide.


  • The extraction of gold from cyanide solutions by strong- and weak-base anion-exchange resins.
  • Tridimensional structure of the zinc cyanide ion [Zn27(CN)55]2
    determined by quantum mechanical calculations (QMC) as a complementary method to force.
  • The economic and environmental case for recovering from gold plant tailings.
  • Study and development of advanced technology for silver sorption recovery from multicomponent leaching solutions.

  • Evaluation of copper and zinc cyanide complexes toxicity using Euglena gracilis Z &SMZ as an in vitro model.

  • Optimisation and scale-up of microwave assisted cyanation

  • Reverse Osmosis Recycle of Electroplating Chemicals
    at pH Extremes.
  • Alternatives to the Use of Cyanide Solutions in Electroplating.
  • Acute Effects of Zinc Cyanide on the Behaviour and Oxygen Consumption of the Indian Major Carp Cirrhinus mrigala (Hamilton).
  • The elution of metal cyano complexes from polyacrylic - and polystyrene -based ion exchange resins using nitrate and thiocyanate eluants.

  • Effect of exposure to sub lethal concentrations of zinc cyanide on tissue atpase activity in the fresh water fish.

  • Zinc(II) promoted conversion of aryltriazenes to aryl iodides
    and aryl nitriles.

  • Removal of cyanide and zinc cyanide complex by an ion-exchange.






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