Chemical elements
    Physical Properties
    Chemical Properties
      Zinc Fluoride
      Zinc Chloride
      Zinc Oxychlorides
      Zinc Bromide
      Zinc Iodide
      Zinc Hypochlorite
      Zinc Perchlorate
      Zinc Bromate
      Zinc Iodate
      Zinc Periodate
      Zinc Oxide
      Zinc Hydroxide
      Zinc Peroxide
      Zinc Sulphide
      Zinc Hydrosulphite
      Zinc Thiosulphate
      Zinc Sulphite
      Zinc Sulphate
      Zinc Dithionate
      Zinc Tetrathionate
      Zinc Pentathionate
      Zinc Selenide
      Zinc Selenites
      Zinc Selenate
      Zinc Telluride
      Zinc Tellurate
      Zinc Chromite
      Zinc Chromate
      Zinc Dichromate
      Zinc Molybdate
      Zinc Tungstate
      Zinc Nitride
      Zinc Azide
      Zinc Amide
      Zinc Ammoniate
      Zinc Nitrite
      Zinc Nitrate
      Basic Zinc Nitrates
      Zinc Phosphide
      Zinc Hydrophosphide
      Zinc Hypophosphite
      Zinc Phosphite
      Zinc Thiophosphite
      Zinc Orthophosphate
      Zinc Pyrophosphate
      Ammonium Zinc Orthophosphate
      Zinc Thiophosphates
      Zinc Arsenide
      Zinc Arsenite
      Zinc Arsenates
      Zinc Metantimonate
      Thioantimony Salts of Zinc
      Zinc Carbonate
      Zinc Thiocarbonate
      Zinc Cyanide
      Zinc Thiocyanate
      Zinc Silicide
      Zinc Silicates
      Zinc Borates
      Zinc Perborate
    PDB 12ca-1ai0
    PDB 1aiy-1b6z
    PDB 1b71-1bs8
    PDB 1bsk-1cao
    PDB 1caq-1ctt
    PDB 1ctu-1de6
    PDB 1def-1dy0
    PDB 1dy1-1ed6
    PDB 1ed8-1exk
    PDB 1eyf-1fj9
    PDB 1fjg-1g0e
    PDB 1g0f-1gkq
    PDB 1gkr-1ha5
    PDB 1hbm-1hso
    PDB 1hsz-1i6v
    PDB 1i73-1im5
    PDB 1iml-1jcv
    PDB 1jcz-1jy8
    PDB 1jyb-1kh4
    PDB 1kh5-1kys
    PDB 1kzo-1llm
    PDB 1llu-1m7j
    PDB 1m9j-1mwo
    PDB 1mwq-1ndv
    PDB 1ndw-1nyq
    PDB 1nyr-1os4
    PDB 1os9-1p9w
    PDB 1paa-1pud
    PDB 1pv8-1q9l
    PDB 1q9m-1qv6
    PDB 1qv7-1r6o
    PDB 1r79-1ro9
    PDB 1ror-1sfo
    PDB 1sg0-1t3k
    PDB 1t4k-1tkh
    PDB 1tkj-1u0l
    PDB 1u10-1ums
    PDB 1umt-1v67
    PDB 1v6g-1vrq
    PDB 1vs0-1wew
    PDB 1wfe-1wwf
    PDB 1wwg-1xb1
    PDB 1xb8-1xpz
    PDB 1xq0-1y5w
    PDB 1y5x-1ylk
    PDB 1ylo-1z8r
    PDB 1z93-1zkx
    PDB 1zl6-258l
    PDB 2a03-2afo
    PDB 2afs-2atq
    PDB 2au3-2bfz
    PDB 2bg2-2c3a
    PDB 2c4r-2cij
    PDB 2cim-2czr
    PDB 2d0w-2djw
    PDB 2dkc-2e1b
    PDB 2e1s-2eer
    PDB 2eex-2em4
    PDB 2em5-2eoj
    PDB 2eok-2erq
    PDB 2esf-2fa7
    PDB 2fac-2fpx
    PDB 2fqp-2g84
    PDB 2g87-2gvf
    PDB 2gvi-2han
    PDB 2hap-2huc
    PDB 2hue-2imc
    PDB 2imr-2j65
    PDB 2j6a-2jq5
    PDB 2jr7-2kfn
    PDB 2kft-2l75
    PDB 2lgv-2nx9
    PDB 2nxa-2oc8
    PDB 2occ-2osm
    PDB 2oso-2p53
    PDB 2p57-2pow
    PDB 2ppb-2q8j
    PDB 2qa1-2qp6
    PDB 2qpj-2r71
    PDB 2r74-2sod
    PDB 2srt-2v86
    PDB 2v87-2vp7
    PDB 2vpb-2vyo
    PDB 2vz5-2wey
    PDB 2wfq-2wx0
    PDB 2wx1-2xam
    PDB 2xan-2xr9
    PDB 2xrg-2ytd
    PDB 2yte-2z30
    PDB 2z3g-2zet
    PDB 2zh0-3a32
    PDB 3a36-3aoi
    PDB 3at1-3bk1
    PDB 3bk2-3byr
    PDB 3byw-3cia
    PDB 3ciz-3d08
    PDB 3d09-3dbu
    PDB 3dc3-3dp6
    PDB 3dpe-3e1w
    PDB 3e1z-3ebh
    PDB 3ebi-3epk
    PDB 3epl-3f28
    PDB 3f2b-3fhe
    PDB 3fhp-3ful
    PDB 3fum-3g9y
    PDB 3ga3-3gpu
    PDB 3gpx-3h2w
    PDB 3h3e-3hfy
    PDB 3hgz-3hsn
    PDB 3hso-3i8v
    PDB 3i9b-3ij6
    PDB 3ijf-3ixe
    PDB 3iz0-3k34
    PDB 3k35-3kiy
    PDB 3kj1-3kvt
    PDB 3kwa-3lat
    PDB 3lcn-3lrr
    PDB 3ls1-3m1n
    PDB 3m1v-3mek
    PDB 3men-3mru
    PDB 3ms0-3n63
    PDB 3n64-3nin
    PDB 3nis-3ny2
    PDB 3ny3-3ohc
    PDB 3ohd-3oyl
    PDB 3oym-3pih
    PDB 3pki-3r0d
    PDB 3rj7-3t74
    PDB 3t87-3u9g
    PDB 3ua7-3v24
    PDB 3v25-4agl
    PDB 4agm-4dih
    PDB 4dii-4efs
    PDB 4eg2-4fc8
    PDB 4fgm-6tli
    PDB 6tmn-9nse

Zinc Peroxide

Thenard obtained an incompletely peroxidised oxide of zinc by (a) dissolving zinc hydroxide in hydrochloric acid containing hydrogen peroxide and precipitating with an alkali hydroxide; (b) acting on gelatinous zinc hydroxide with hydrogen peroxide.

Haass precipitated zinc salts with ammonia in the presence of hydrogen peroxide and obtained white precipitates that, after drying at 110° C., varied in composition between Zn5O8 and Zn3O5.

Kouriloff, by evaporating zinc oxide or hydroxide nearly to dryness with dilute hydrogen peroxide solution, obtained a white, finely crystalline powder, to which he assigned the formula ZnO2.Zn(OH)2.

de Forcrand agitated zinc oxide with hydrogen peroxide solution and obtained Zn3O5.2H2O, Zn3O5.3H2O, and Zn4O7.4H2O as gelatinous white precipitates that became white powders on drying. They were stable in air, but on heating Zn4O7.4H2O to 100° C. it became Zn3O5.3H2O. By continued treatment with hydrogen peroxide he obtained 2ZnO2.5H2O, which, however, gradually changed into Zn3O5.2H2O.

He preferred to formulate these substances as -

3ZnO.2H2O2.3ZnO.H2O+2H2O2 or
HO.Zn.O.Zn.O.Zn.OH+2H2O2.4ZnO.H2O+3H2O2 or
HO.Zn.O.Zn.O.Zn.O.Zn.OH+3H2O2.ZnO.H2O+H2O2 or

Eijkmann described the preparation of 3ZnO2.Zn(OH)2 by the action of 30 per cent, hydrogen peroxide on an ammoniacal solution of zinc sulphate.

Kazanecky obtained a fine crystalline precipitate of ZnO2.H2O by acting with 30 per cent, hydrogen peroxide on alkali zincates. It decomposed explosively at 178° C. He regarded it as


When pure zinc oxide reacts with an ethereal solution of hydrogen peroxide, the product, after drying at 6O°-70° C., has the composition Zn4O7.2H2O. It loses oxygen when heated with water at 100° C., and forms Zn3O5.H2O. Both these peroxides are reddish-yellow powders that are stable under ordinary conditions and explode at 212°-216° C. Carrasco regarded them as perzincic acids -


Ebler and Krause obtained ZnO2H2O, which they formulated as H2O, by acting upon a cooled solution of zinc ethyl in dry ether with a dry ethereal solution of hydrogen peroxide. The white amorphous precipitate was decomposed by acids and slowly hydrolysed by water. A similar product was obtained by dissolving zinc nitrate in concentrated ammonia solution, cooling to -5° C., adding a concentrated solution of hydrogen peroxide, and stirring the filtered precipitate for some time with more of the hydrogen peroxide. The product was either moist ZnO2 or ZnO2H2O.

Sjostrom obtained a white powder by carefully drying the product of the prolonged action of the calculated amount of 30 per cent, hydrogen peroxide solution on freshly ignited zinc oxide. Its composition corresponded to the formula Zn2O(OH)(O.OH). It was stable under ordinary conditions and only slowly decomposed by 2N NaHO.

He concluded that zinc perhydrate is usually a mixture of substances derived from Zn(OH)2 and HO.Zn.O.ZnOH, and that the hydroperoxides are of the types HO.Zn.O.OH and Zn(OH).O.Zn.O.OH.

Commercially, zinc peroxide has been prepared by allowing barium peroxide suspended in water to act on the zinc salt of an acid that forms an insoluble barium salt. The electrolytic preparation, however, is most satisfactory. A solution of zinc chloride, neutralised by adding zinc oxide, is electrolysed in a vessel containing a porous diaphragm, and hydrogen peroxide is added to the cathode cell. The precipitated hydrated peroxides are carefully dried.

The commercial product is a dense, yellowish-white powder of density 1.571, and appears to contain about 50 per cent, of ZnO2 mixed with zinc hydroxide and free moisture. It is very stable - losing only water at 100° C. and not being decomposed by water. One part dissolves in 45,500 parts of water. It has strong antiseptic properties, and has the advantage of being odourless and non-irritant. It is soluble in acids but is indifferent to mineral hydrocarbons. This last property is important for its extensive use in ointments. It is much used in surgery and dermatology.

Preparations of zinc peroxide are known under the trade names of zinkonal, dermogen, eklogan, and zinc perhydrol.

© Copyright 2008-2012 by