Zinc Peroxide

Metals -> Peroxides, Metal

Reactive agents - 3rd degree

1.57 g/cu cm

Yellowish powder; density: 3.00 + or - 0.08; loses oxygen in vacuum; slightly decomp in cold water; decomp in hot water; decomposes in ether, alcohol, acetone; /Zinc peroxide hemihydrate/

INSOL IN WATER; SOL IN DIL ACIDS

Insol in organic solvents

Finely divided powder ... decomposes rapidly at 150 deg.

Decomposes to zinc oxide and oxygen above 150 °C. Decomposes explosively at 190-212 °C.

This chemical does not meet GHS hazard criteria for 1% (1 of 100) of reports.

Danger

H271 (94%): May cause fire or explosion; strong Oxidizer [Danger Oxidizing liquids; Oxidizing solids]

P210, P220, P264, P264+P265, P280, P283, P302+P352, P305+P351+P338, P306+P360, P321, P332+P317, P337+P317, P362+P364, P370+P378, P371+P380+P375, P420, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 100 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Danger

Chemical: Zinc peroxide (Zn(O2))

Zinc peroxide (Zn(O2)): Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Excerpt from ERG Guide 143 [Oxidizers (Unstable)]:

· May explode from friction, heat or contamination.

FLAMMABLE WHEN EXPOSED TO HEAT OR BY CHEM REACTION WITH REDUCING MATERIALS.

Non-combustible but it will accelerate the burning of combustible material. If the combustible material is finely divided the mixture may be explosive. Mixtures of combustible material and the peroxide can be ignited by friction or contact with moisture.

Zinc can enter the body through the lungs, skin, and gastrointestinal tract. Intestinal absorption of zinc is controlled by zinc carrier protein CRIP. Zinc also binds to metallothioneins, which help prevent absorption of excess zinc. Zinc is widely distributed and found in all tissues and tissues fluids, concentrating in the liver, gastrointestinal tract, kidney, skin, lung, brain, heart, and pancreas. In the bloodstream zinc is found bound to carbonic anhydrase in erythrocytes, as well as bound to albumin, _2-macroglobulin, and amino acids in the the plasma. Albumin and amino acid bound zinc can diffuse across tissue membranes. Zinc is excreted in the urine and faeces. (L49)

Used in pharmaceuticals, as a rubber accelerator, as a curing agent for synthetic elastomers, for high-temperature oxidation, as an antiseptic in cosmetic powders, as a deodorant for wounds and skin diseases, and as a topical antiseptic and astringent; [HSDB]

Using Disinfectants or Biocides [Category: Clean]

IN PHARMACEUTICALS; ACCELERATOR IN RUBBER COMPOUNDING; CURING AGENT FOR SYNTHETIC ELASTOMERS

High-temp oxidation

PRESENT IN COSMETIC POWDERS AS ANTISEPTICS

MEDICATION

MEDICINAL ZINC PEROXIDE USP. SUSPENSION 25%; 60 ML, 120 ML & 240 ML BOTTLES. TO PREVENT RELEASE OF OXYGEN BEFORE MATERIAL IS APPLIED, DRY ACTIVATED ZINC PEROXIDE IS DISPENSED SEPARATELY TO BE ADDED TO ... STERILE PURIFIED WATER IMMEDIATELY BEFORE USE. ZINC PEROXIDE MAY ALSO BE USED AS DUSTING POWDER, USUALLY MIXED WITH TALCUM, OR AS 25% OINTMENT.

The peroxide of commerce contains 50-60% ZnO2, the remainder is ZnO.

Grades: USP (mixture of peroxide, carbonate & hydroxide), technical 50-60%

Zinc peroxide cream: Zinc peroxide 1 g, zinc oxide 5 g, wool fat 2 g, calcium hydroxide soln 1 ml, arachis oil 8 ml. It should be freshly prepared.