Zinc peroxide

Crystal structure
	__ Zn 2+ __ O 2 2−
General
Surname	Zinc peroxide
Ratio formula	ZnO 2
Brief description	white to yellowish, odorless solid
External identifiers / databases
EC number	215-226-7
ECHA InfoCard	100.013.843
PubChem	10129902
Wikidata	Q647580
properties
Molar mass	97.39 g mol −1
Physical state	firmly
density	1.57 g cm −3
Melting point	decomposes when heated
solubility	soluble in water with hydrolysis
safety instructions
H and P phrases	H: 271-315-319-410
	P: 210-220-221-305 + 351 + 338-370 + 378-371 + 380 + 375
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Zinc peroxide is a whitish to light yellow solid and a strong oxidizing agent .

Extraction and presentation

Zinc peroxide can be obtained by reacting zinc oxide with hydrogen peroxide , the product containing water of crystallization . Production from other zinc salts and hydrogen peroxide is also possible. Anhydrous zinc peroxide is obtained by reacting zinc nitrate with potassium peroxide in liquid ammonia. The latter two methods, however, result in a less pure product.

properties

The chemical properties of zinc peroxide are similar to those of magnesium peroxide .

At temperatures above 150 ° C, zinc peroxide decomposes into zinc oxide and oxygen; at 212 ° C this reaction is explosive:

{\ displaystyle \ mathrm {2 \ ZnO_ {2} \ rightarrow 2 \ ZnO \ + \ O_ {2}}}

use

Zinc peroxide is used in the manufacture of lead, antimony and barium-free SINTOX primers. Zinc peroxide is also a component of tooth whitening products.

safety instructions

As a strong oxidizing agent, zinc peroxide is fire-promoting. Mechanical effects or heating can lead to explosive reactions; mixtures with flammable substances also tend to - possibly explosive - self-ignition.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g Entry on zinc peroxide in the GESTIS substance database of the IFA , accessed on January 9, 2019(JavaScript required) .
^ ^A ^b F. Albert Cotton (Ed.): Progress in Inorganic Chemistry . tape 4 . John Wiley & Sons, 2009, ISBN 978-0-470-16655-0 , pp. 146 (English).
^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , pp. 47-48.
↑ blv.admin.ch: Dental bleach , March 13, 2013.
↑ Zinc Peroxide at cameochemicals.noaa.gov, accessed January 27, 2019.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g Entry on zinc peroxide in the GESTIS substance database of the IFA , accessed on January 9, 2019(JavaScript required) .

[Cotton_146-2] A ^b F. Albert Cotton (Ed.): Progress in Inorganic Chemistry . tape 4 . John Wiley & Sons, 2009, ISBN 978-0-470-16655-0 , pp. 146 (English).

[3] AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , pp. 47-48.

[4] v.admin.ch: Dental bleach , March 13, 2013.

[5] Zinc Peroxide at cameochemicals.noaa.gov, accessed January 27, 2019.