Peroxide has toxic effects inside our cells. Therefore, they have to be neutralized as soon as they are produced. Our cells have a special mechanism for that. There is an organelle called peroxisomes in our cells, which contain the catalase enzyme. This enzyme catalyses the decomposition of hydrogen peroxide into water and oxygen; thus, do a detoxification function.
Hydrogen peroxide has hazardous properties like decomposition to oxygen and water with evolution of heat, decomposes due to contamination or contact with active surfaces, increases inside the containers due to the formation of oxygen pressure, and it also can form explosive mixtures. Bleaching action of hydrogen peroxide is due to oxidation and release of oxygen. This oxygen will react with coloring matter, to make it colorless. Other than for bleaching, H 2 O 2 is used an oxidant for rocket fuel, for production of epoxides, pharmaceuticals and food products, as an antiseptic, etc.
Hydrogen peroxide is stored in paraffin wax coated glass, plastic or Teflon bottles. Review of Scientific Instruments , 87 10 , International Journal of Chemical Kinetics , 48 4 , On the role of excited species in hydrogen combustion.
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Heufer , Nicola Donohoe , Apurba K. Krejci , Eric L. Petersen , William J. Pitz , Henry J. Gargle, swishing the solution all around the mouth. Gargling hydrogen peroxide may be an effective way to sooth a sore throat, disinfect your mouth, and whiten your teeth.
Just make sure you dilute it first, and try not to swallow any in the process. Whitening rinses are another way to get rid of yellow teeth. They contain oxygen sources such as hydrogen peroxide.
These react with the compounds staining the teeth, helping to lift them. Using a rinse twice a day for 1 minute at a time can lead to a one to two shade improvement in tooth color within 3 months. Since the double bonds are often what causes the molecules to absorb light, and therefore give the molecule its colour, removal of them destroys the pigments and so removes the colour. H 2 O 2 is used in this way to bleach wood pulp to make white paper, and the melanin in hair.
Some of the most famous Hollywood movie stars, such as Marilyn Monroe and Jean Harlow, were 'peroxide blondes' and perhaps owe some of their fame to the H 2 O 2 molecule. One advantage of hydrogen peroxide over some other bleaching agents, such as chlorine gas, is that the decomposition products, water and oxygen, are not harmful.
Hydrogen peroxide also plays a less beneficial role in modern life, as one of the causes of photochemical smog.
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