Peroxide Sentence Examples

In some cases, such as that of peroxide of lead, an increase of resistance takes place.

The formaldehyde at once undergoes a process of condensation oi- polymerization by the protoplasm of the plastid, while the hydrogen peroxide is said to be decomposed into water and free oxygen by another agency in the cell, of the nature of one of the enzymes of which we shall speak later.

His researches on sebacic acid (1802) and on bile (1807), and his discovery of peroxide of hydrogen (1818) also deserve mention.

The action proceeds in two stages; in the first hydrogen peroxide and potassium aurocyanide are formed, and in the second the hydrogen peroxide oxidizes a further quantity of gold and potassium cyanide to aurocyanide, thus (1) 2Au+4KCN +02+2H20=2KAu(CN)2+4KOH+H202;(2)2Au+4KCN+2H202= 2KAu(CN) 2 +4KOH.

Serullas and Roscoe; Davy and Stadion investigated chlorine peroxide, formed by treating potassium chlorate with sulphuric acid.

He then tried the direct combination of nitric oxide with liquid nitrogen peroxide.

It is also prepared by the action of phosphorus pentachloride on potassium nitrite or on nitrogen peroxide.

It is also obtained by the action of hydrogen peroxide on hydrocyanic acid, or of manganese dioxide and sulphuric acid on potassium cyanide.

A higher hydrated oxide, CeO 3 xH 2 O, is formed by the interaction of cerous sulphate with sodium acetate and hydrogen peroxide (Lecoq de Boisbaudran, Comptes rendus, 1885, loo, p. 605).

The sulphides can be removed by " oxidizing " them into thiosulphates by means of atmospheric air, with or without the assistance of other agents, such as manganese peroxide; or by " carbonating " them with lime-kiln or other gases containing carbon dioxide; or by precipitating them with lead or zinc oxide.

A peroxide, N102, has been obtained in the form of dinickelite of barium, BaO.

A hydrated form, Ni 3 0 4 ..2H 2 O, is obtained when the monoxide is fused with sodium peroxide at a red heat and the fused mass extracted with water.

On the other hand the stability of the known oxygen compounds increases with the atomic weight, thus iodine pentoxide is, at ordinary temperatures, a well-defined crystalline solid, which is only decomposed on heating strongly, whilst chlorine monoxide, chlorine peroxide, and chlorine heptoxide are very unstable, even at ordinary temperatures, decomposing at the slightest shock.

Chlorine peroxide must be collected by displacement, as it is soluble in water and readily attacks mercury.

It is a very powerful oxidant; a mixture of potassium chlorate and sugar in about equal proportions spontaneously inflames when touched with a rod moistened with concentrated sulphuric acid, the chlorine peroxide liberated setting fire to the sugar, which goes on burning.

It may be distinguished from chloric acid by the fact that it does not give chlorine peroxide when treated with concentrated sulphuric acid, and that it is not reduced by sulphurous acid.

They are all decomposed on heating, with evolution of oxygen; and in contact with concentrated sulphuric acid with liberation of chlorine peroxide.

Copper dioxide, CuO 2 H 2 O, is obtained as a yellowish-brown powder, by treating cupric hydrate with hydrogen peroxide.

It is a grey coloured powder which is readily decomposed by dilute acids with the production of hydrogen peroxide.

The residue in the filter is ignited and fused with a little sodium carbonate and nitrate, or with sodium peroxide.

Silver peroxide, AgO, appears under certain conditions as minute octahedra when a solution of silver nitrate is electrolysed, or as an amorphous crust in the electrolysis of dilute sulphuric acid between silver electrodes.

Hydrogen peroxide is also formed.

It is certain that the formation of hydrogen peroxide and ozone accompany the glowing, and in 1848 Schonbein tried to demonstrate that it.

The solution is stable to oxidizing agents such as dilute hydrogen peroxide and chlorine, but is oxidized by potassium permanganate to phosphoric acid; it does not reduce salts of the heavy metals.

The first is formed when 30% hydrogen peroxide reacts with phosphorus pentoxide or metaor pyrophosphoric acids at low temperatures and the mixture diluted with ice-cold water.

Perphosphoric acid is formed when pyrophosphoric acid is treated with a large excess of hydrogen peroxide.

The alkaloid is a strong base and is very readily oxidized; chromic acid converts it into normal butyric acid and ammonia; hydrogen peroxide gives aminopropylvalerylaldehyde, NH 2 CH(C 3 11 7) (CH2)3 CHO, whilst the benzoyl derivative is oxidized by potassium permanganate to benzoyl-a-aminovaleric acid, C 6 H 5 CO NH CH(C 3 H 7) (CH 2)3 COOH.

The formation of addition compounds with the halogens, halogen hydrides, and with nitrosyl chloride, is characteristic of many, whilst others unite readily with nitrogen peroxide.

The failure of this definition is seen in the case of lead dioxide, which is certainly a peroxide in properties, but it is also the typical oxide of Group IV.

Peroxides may be basic or acidic. Some basic oxides yield hydrogen peroxide with acids, others yield oxygen (these also liberate chlorine from hydrochloric acid), and may combine with lower acidic oxides to form salts of the normal basic oxide with the higher acidic oxide.

Na 0 0 Na, Bab, which yield hydrogen peroxide with acids; and (2) the polyoxides, having the oxygen atoms doubly linked to the metallic atom, e.g.

This theory was controverted by Wyndham Dunstan, who attempted to prove that carbon dioxide was not necessary to rusting; and in place of the acid theory, he set up a scheme which involved the production of hydrogen peroxide.

They may also be prepared by oxidizing chromium salts (in alkaline solution) with hydrogen peroxide, chlorine, bleaching powder, potassium permanganate and manganese dioxide.

By the addition of hydrogen peroxide to a solution of chromic acid, a fine blue coloration due to a perchromic acid is produced which is readily absorbed by shaking out with ether.

It is shown that the blue solution most probably contains the acid of composition, H2Cr203, whilst in the presence of an excess of hydrogen peroxide more highly oxidized products probably exist.

The pharmacological action of hydrogen peroxide (H202), potassium permanganate, powdered charcoal and some other oxidizing agents depends on the readiness with which they give up oxygen.

Hydrogen Peroxide, to remove any bloodstains from carpets.

Peroxisomes - derived from rough eroxisomes - derived from rough ER, that contain enzymes that will form hydrogen peroxide - which phagocytic cells use to kill bacteria.

Therefore it is important to try and comprehend how reduced flavin can complex and actually reduce oxygen to hydrogen peroxide.

A good combo is wash using hydrogen peroxide - this will kill off anything on the surface, then sprinkle with antibiotic powder.

The gel contains hydrogen peroxide which bleaches the teeth, together with glycerin and purified water to protect your teeth from dehydration.

When honey is diluted, a special enzyme the bees have added produces hydrogen peroxide, a well-known antibiotic.

Peroxisomes - derived from rough ER, that contain enzymes that will form hydrogen peroxide - which phagocytic cells use to kill bacteria.

To prevent this, you heat the solution for some time to decompose the hydrogen peroxide into water and oxygen before adding the acid.

Selenium Selenium is also important in the process of destroying hydrogen peroxide.

It can often help to rinse the mouth with a diluted solution of 3 per cent hydrogen peroxide.

Excess hydrogen peroxide may then react with transition metals to form hydroxyl radical.

Catalyst (hardener) used for polyester resins is an organic peroxide (methyl ethyl ketone peroxide) and is particularly dangerous.

It was not an overturned lorry, but a lorry carrying nitrogen peroxide that caught fire.

I placed the mouthpiece above in a jar containing Hydrogen Peroxide.

Some two hours have passed since I placed the clarinet mouthpiece in the Hydrogen Peroxide.

In the absence of cells, isobutyl nitrite reacted with hydrogen peroxide to form peroxynitrite.

There is a third natural antioxidant enzyme called, glutathione peroxidase which also reduces hydrogen peroxide to water.

First line treatment for acne includes creams or gels containing the active ingredient benzoyl peroxide, which is available from chemists.

In the case it was apparent that the use of acetone had generated an unstable peroxide.

Nunn stopped short of adding peroxide to Whishaw's hair, but the temptation must have been unbearable.

The function of the oxygen - chain initiation The oxygen reacts with some of the ethene to give an organic peroxide.

Apply a benzoyl peroxide cream daily to the affected areas.

The hydrogen peroxide in honey is produced by an enzyme in the honey.

The results showed that the group practicing the TM technique had 15% lower serum lipid peroxide levels compared to the controls.

The ' active ingredient ' in the product is usually hydrogen peroxide or carbamide peroxide.

Addition of hydrogen peroxide produces lots of bubbles of oxygen and a dark chocolate brown precipitate.

If these are not adequate, I dispense selenium sulfide or benzyl peroxide shampoos.

This enzyme converts dangerous superoxide free radicals to the less dangerous hydrogen peroxide.

By suspending cobaltous hydroxide in water and adding hydrogen peroxide, a strongly acid liquid is obtained (after filtering) which probably contains cobaltous acid, H2CoO 3.

The formulae of Kekule, Divers and Armstrong have been discarded, and it remains to be shown whether Nef's carbonyloxime formula (or the bimolecular formula of Steiner) or Scholl's glyoxime peroxide formula is correct.

Jowitschitsch (Ann., 1906, 347, p. 2 33) inclines to Scholl's formula; he found that the synthetic silver salt of glyoxime peroxide resembled silver fulminate in yielding hydroxylamine with hydrochloric acid, but differed in being less explosive, and in being soluble in nitric acid.

Phys., 1888 (6) 14, p. 435); by heating phenol carboxylic acids with baryta; and, in small quantities by the oxidation of benzene with hydrogen peroxide or nascent ozone (A.

Piloty, Ber., 1902, 35, p. 3 0 93); and by the action of nitrogen peroxide on ethereal solutions of ketoximes (R.

Hydrogen peroxide finds application as a bleaching agent, as an antiseptic, for the removal of the last traces of chlorine and sulphur dioxide employed in bleaching, and for various quantitative separations in analytical chemistry (P. Jannasch, Ber., 1893, 26, p. 2908).

Chem., 1866, 9 8, p. 340); by the action of chlorine on steam at a bright red heat; by the decomposition of hydrogen peroxide by bleaching powder, manganese dioxide, potassium ferricyanide in alkaline solution, or potassium permanganate in acid solution; by heating barium peroxide with an aqueous solution of potassium ferricyanide (G.

Scheele, the discoverer of chlorine, in 177 4, is the peroxide of manganese (manganese dioxide), found in considerable quantities in nature as " manganese ore " (the purest of which is called pyrolusite), and also artificially regenerated from the waste liquors of a former operation.

Protect red blood cells from being destroyed by poisons, such as hydrogen peroxide, in the blood.

Smile 4 You Teeth whitening kits which contain enough peroxide gel for 3-4 weeks of treatment.

Remove cat urine stains using a two step process containing baking soda, white vinegar, hydrogen peroxide and dishwashing detergent.

No More Cat Odor offers various home remedies that include using peroxide, Listerine mouthwash and a mixture of vinegar and baking soda.

If you do not have a commercial enzyme cleaner, many pet parents have removed cat urine using common household products including baking soda, hydrogen peroxide, white vinegar and dishwashing detergent.

If you do receive a cat bite, you should wash the wound immediately and put hydrogen peroxide on it.

Pat skin dry with a clean, soft towel and follow up with a medicine that contains salicylic acid or benzoyl peroxide.

Studies indicate that tea tree oil was as effective as benzoyl peroxide products.

Once the splinter has been removed, treat the area with either alcohol or hydrogen peroxide.

In the laser tooth whitening process, the highest concentration of hydrogen peroxide is used.

The dentist then applies a high intensity light (laser) to trigger the reaction of hydrogen peroxide on your teeth.

All standard tooth whitening products contain a bleaching gel with either carbamide peroxide or hydrogen peroxide.

Active ingredient is carbamide peroxide - a FDA approved oral antiseptic that has been discovered as a tooth whitening product.

Tooth whitening strips apply the peroxide to one side of a sticky strip of tape.

In these home tooth whitening products, the peroxide is applied directly to the teeth with a brush or other applicator.

His hair is actually a dark brown, but he's been bleaching it with peroxide since he was a teenager.

If there is a bloodstain after a round at the playground, put the pants in cold water and pour peroxide on the stain.

Don't use alcohol, use hydrogen peroxide and warm water and never use Q-tips!

Next, tear off another piece of cotton and drench it with hydrogen peroxide.

He said if Senny looked like he didn't feel well to bring him in, but that I could also give him a teaspoon of hydrogen peroxide to help make him throw up the chocolate.

Also, you should not use this mixture if your dog has any kind of skin rash because the peroxide will cause more irritation to his skin.

But Surya Henna does not lighten the hair because it does not contain ammonia (to open the hair cuticles) or peroxide (to remove natural hair color and replace it by artificial color).

It is free from harmful ingredients like ammonia, peroxide, lead, PPD, and heavy metals.

A three percent solution of hydrogen peroxide, which is available in grocery or drug stores, can be applied after the vinegar treatment for an extra cleaning boost.

Epsom salt and hydrogen peroxide are other good solutions.

This process requires ammonia or peroxide to get the result the client is looking for.

Unlike other solutions, Clear Care uses hydrogen peroxide to kill any germs that may be in your contacts.

Peroxide based solutions also require the use of an upright case.

Then, soak the stain in a mixture of one teaspoon laundry or dishwashing liquid with one cup hydrogen peroxide.

It is important to clean mouth wounds thoroughly with salt water or a hydrogen peroxide rinse to prevent infection.

By definition, a peroxisome must contain catalase, which is an enzyme that breaks down hydrogen peroxide.

The doctor may add a small amount of alcohol, hydrogen peroxide, or other antiseptic.

A 3 percent solution of hydrogen peroxide may also be used.

Treatment for mild noninflammatory acne consists of reducing the formation of new comedones with medications including topical tretinoin, benzoyl peroxide, adapalene, or salicylic acid.

A combination of topical benzoyl peroxide and erythromycin is also very effective.

For example, lotions, soaps, gels, and creams containing substances called benzoyl peroxide or tretinoin may be used to clear up mild to moderately severe acne.

Benzoyl peroxide and tretinoin work by mildly irritating the skin.

Benzoyl peroxide also kills bacteria, which helps prevent whiteheads and blackheads from turning into pimples.

Benzoyl peroxide is found in many over-the-counter acne products that are applied to the skin, such as Benoxyl, Neutrogena Acne, PanOxyl, and some formulations of Clean & Clear, Clearasil, and Oxy.

Some benzoyl peroxide products are available without a physician's prescription; others require a prescription.

Because antiacne drugs such as benzoyl peroxide and tretinoin irritate the skin slightly, users should avoid doing anything that might cause further irritation.

If benzoyl peroxide or tretinoin make the skin too red or too dry or cause too much peeling, the user should check with a physician.

Benzoyl peroxide can irritate the skin of people with skin of color and cause darkened spots called hyperpigmentation on the skin.

Benzoyl peroxide may discolor hair or colored fabrics.

Anyone who has had unusual reactions to etretinate, isotretinoin, tretinoin, vitamin A preparations, or benzoyl peroxide in the past should let the physician know before using an antiacne drug.

Teens who are pregnant or who may become pregnant should check with a physician before using tretinoin or benzoyl peroxide.

Because semi-permanent color contains neither ammonia nor peroxide, it only affects the outer layer of the hair shaft.

Trace amounts of peroxide serve to blend the shade evenly and promote the entry of color molecules into the hair's cortex.

These hair products usually contain both ammonia and peroxide that lighten the natural pigment of one's hair and form a new base color before the permanent shade takes hold.

Demi color contains an alkaline agent such as ethanolamine or sodium carbonate instead of ammonia, and is mixed with a developer containing a very low concentration of hydrogen peroxide.

Semi permanent color contains little or no developer, ammonia, or peroxide, produces a natural look that only last four to five shampoo, and while semi permanent color may blend gray, it will usually not cover it very well.

Chemical services such as perms and relaxers contain a small amount of peroxide, which may cause unwanted lightening of the hair.

With its higher peroxide level, you can achieve up to four levels of lift and deposit with a permanent color formula.

Grey hair can be very resistant to hair color and may need a higher peroxide level to fully open the hair shaft and allow for the deposit of color.

Taking birth control that helps acne is helpful because you can use this medication in combination with skin care products that contain salicylic acid or benzyl peroxide.

Benzoyl peroxide is safe to use during pregnancy, but the American Pregnancy Association suggests avoiding products that contain salicylic acid.

It's believed these high doses of vitamin C increase the body's hydrogen peroxide levels on a cellular basis, killing cancerous cells.

Avoid using products such as hydrogen peroxide, rubbing alcohol, Hibiclens, Bactine or products containing benzalkonium chloride.

Avoid using products such as Bactine, Hibiclens, benzalkonium chloride, hydrogen peroxide or rubbing alcohol near the piercing site.

Hydrogen peroxide - Use a solution made of one part hydrogen peroxide and one part water.

Regular household products often serve multi purposes such as using hydrogen peroxide as a general cleaner or vinegar to clean hardwood floors.

On light colored carpets, hydrogen peroxide and water is an excellent way to 'bleach' out or 'severely fade' the urine stain.

Urine is bright yellow in most cases, the peroxide works to break down the bonds in the proteins and fades the stain out.

For example, hydrogen peroxide removes organic stains such as blood.

Home remedies such as vinegar, peroxide or lemon may bleach fabric so they should be tested on an inside seam first before using it on the stain.

Washable Fabrics Pre-treat dry blood stains by combining one teaspoon of laundry or dish soap with one cup of hydrogen peroxide.

Have a care with dark fabrics as hydrogen peroxide may fade them.

You may also use a mixture of half a cup of cornstarch, teaspoon of salt and a quarter cup of hydrogen peroxide to make a paste.

On darker fabrics, replace the hydrogen peroxide with water.

You can also use peroxide, which will fizz in the same manner as club soda.

If you are in a pinch and don't have soda or peroxide around your house, you can squirt some window cleaner onto the fabric.

Oil-based stains use the same process, except you'll use hydrogen peroxide instead of dishwashing liquid.

Use an acetone-based nail polish remover to get rid of marker stains on dark granite and hydrogen peroxide to remove it from lighter-colored granite.

Clearasil Maximum Strength Acne Treatment Cream is a popular benzyl peroxide acne medication frequently used by young acne sufferers.

Benzyol Peroxide helps provide a clearer complexion by destroying acne-causing bacteria.

Generally, acne skin care products with benzyl peroxide must be used for several weeks before you begin to see results.

Use acne products that contain benzoyl peroxide or salicylic acid for the best results.

The peroxide kills bacteria that causes acne.

The secret to the product's effectiveness is salicylic acid in the cleanser and benzoyl peroxide in the toner; both decrease inflammation, reduce redness and minimize the occurrence of breakouts.

Benzoyl peroxide helps remove excess oil and also kills P. acnes.

Many experts tell adults to avoid benzoyl peroxide for these reasons.

Physicians can prescribe benzoyl peroxide in higher concentrations, which may provide the effectiveness some acne sufferers need.

The most common over-the-counter choices for acne problems are benzoyl peroxide and salicylic acid.

Salicylic acid is usually found in a gel or serum, while benzoyl peroxide is typically found in a cream.

Benzoyl peroxide prescriptions are highter in strength than products available over-the-counter.

Acne face cream usually contains benzoyl peroxide, salicylic acid, or a natural anti-inflammatory and antiseptic agent such as tea tree oil.

Some creams, such as benzoyl peroxide, can be very drying, so it is essential to have a good face care regimen and proper moisturizers for acne-prone skin.

The first chemical change suggested is an interaction between carbon dioxide and water, under the influence of light acting through chlorophyll, which leads to the simultaneous formation of formaldehyde and hydrogen peroxide.

The peroxide, Ru04, is formed when a solution of potassium ruthenate is decomposed by chlorine, or by oxidizing ruthenium compounds with potassium chlorate and hydrochloric acid, or with potassium permanganate and sulphuric acid.

Thus, i part by weight of hydrogen unites with 8 parts by weight of oxygen, forming water, and with 16 or 8 X 2 parts of oxygen, forming hydrogen peroxide.

Again, in nitrous oxide we have a compound of 8 parts by weight of oxygen and 14 of nitrogen; in nitric oxide a compound of 16 or 8 X 2 parts of oxygen and 1 4 of nitrogen; in nitrous anhydride a compound of 24 or 8 X 3 parts of oxygen and 14 of nitrogen; in nitric peroxide a compound of 3 2 or 8 X 4 parts of oxygen and 14 of nitrogen; and lastly, in nitric anhydride a compound of 4 o or 8 X 5 parts of oxygen and 14 of nitrogen.

The first product of the reaction is nitric oxide, which on cooling with the residual gases produces nitrogen peroxide.

It combines with oxygen to form nitrogen peroxide.

It is decomposed by heat into oxide, nitrogen peroxide and oxygen; and is used for the manufacture of fusees and other deflagrating compounds, and also for preparing mordants in the dyeing and calico-printing industries.

By electrolysis it yields uranium dioxide as a pyrophoric powder, and peruranic hydroxide, U04.2H20, when treated with hydrogen peroxide.

Chromic acid oxidizes it to acetic acid and ozone oxidizes it to ethyl peroxide.

As an alternative the osmiridium is fused with zinc, the regulus treated with hydrochloric acid, and then heated with barium nitrate and barium peroxide.

The peroxide, K204, discovered by Gay-Lussac and Thenard, is obtained by heating the metal in an excess of slightly moist air or oxygen.

The sesquioxide, Pr203, is obtained as a greenish white mass by the reduction of the peroxide.

Chromic acid and its salts, the chromates and bichromates, can be detected by the violet coloration which they give on addition of hydrogen peroxide to their dilute acid solution, or by the fact that on distillation with concentrated sulphuric acid and an alkaline chloride, the red vapours of chromium oxychloride are produced.

The acid so obtained usually contains more or less water and some dissolved nitrogen peroxide which gives it a yellowish red colour.

This consists of a series of vertical earthenware condensing tubes through which compressed air is passed in order to reduce the quantity of nitrogen peroxide to a minimum.

The temperature of the condenser is so regulated as to bring about the condensation of the nitric acid only, which runs out at the bottom of the pipe, whilst any uncondensed steam, nitrogen peroxide and other impurities pass into a Lunge tower, where they meet a descending stream of water and are condensed, giving rise to an impure acid.

Fuming nitric acid consists of a solution of nitrogen peroxide in concentrated nitric acid and is prepared by distilling dry sodium nitrate with concentrated sulphuric acid.

They are all decomposed when heated to a sufficiently high temperature, with evolution for the most part of oxygen and nitrogen peroxide, leaving a residue of oxide of the metal.

Hydrogen combines with oxygen to form two definite compounds, namely, water (q.v.), H 2 O, and hydrogen peroxide, H202, whilst the existence of a third oxide, ozonic acid, has been indicated.

To purify the oxide, it is dissolved in dilute hydrochloric acid until the acid is neatly neutralized, the solution is cooled, filtered, and baryta water is added until a faint permanent white precipitate of hydrated barium peroxide appears; the solution is now filtered, and a concentrated solution of baryta water is added to the filtrate, when a crystalline precipitate of hydrated barium peroxide, Ba0 2 8 H 2 0, is thrown down.

The above methods give a dilute aqueous solution of hydrogen peroxide, which may be concentrated somewhat by evaporation over sulphuric acid in vacuo.

Wolffenstein (Ber., 1894, 27, p. 2307) prepared practically anhydrous hydrogen peroxide (containing 99.1% H 2 0 2) by first removing all traces of dust, heavy metals and alkali from the commercial 3% solution.

Hydrogen peroxide can also react as a reducing agent, thus silver oxide is reduced with, a rapid evolution of oxygen.

Potassium permanganate, in the presence of dilute sulphuric acid, is rapidly reduced by hydrogen peroxide, oxygen being given off, 2KM7,04+ 3H2S04+5H202= K2S04+2MnS04+8H20+502.

Lead peroxide is reduced to the monoxide.

It is found, more especially in the case of organic compounds, that if a substance which oxidizes readily at ordinary temperature be mixed with another which is not capable of such oxidation, then both are oxidized simultaneously, the amount of oxygen used being shared equally between them; or in some cases when the substance is spontaneously oxidized an equivalent amount of oxygen is converted into ozone or hydrogen peroxide.

The oxygen uniting with the substance undergoing oxidation is generally known as "bound oxygen," whilst that which is transformed into ozone or hydrogen peroxide is usually called "active oxygen."

Traube (loc. cit.), on the other hand, concludes that the oxygen molecule enters into action as a whole and that on the oxidation of metals, hydrogen peroxide and the oxide of the metal are the primary products of the reaction.

Walden point out from the physico-chemical standpoint that in water and hydrogen peroxide the oxygen atom is probably quadrivalent.

Oxygen may be applied locally as a disinfectant to foul and diseased surfaces by the use of the peroxide of hydrogen, which readily parts with its oxygen; a solution of hydrogen peroxide therefore forms a valuable spray in diphtheria, tonsillitis, laryngeal tuberculosis and ozaena.

Internally hydrogen peroxide is used in various diseased conditions of the gastro-intestinal tract, such as dyspepsia, diarrhoea and enteric fever.

It completely decomposes hydrogen peroxide in sulphuric acid solution 2KMn04+5H202-I-3H2S04 = K2S04+2MnS04+8H20+502.

Cowper Coles has suggested aluminium cathodes; Andreoli has recommended cathodes of iron and anodes of lead coated with lead peroxide, the gold being removed from the iron cathodes by a brief immersion in molten lead; in the Pelatan-Cerici process the gold is amalgamated at a mercury cathode (see also below).

The laser activation process is designed to trigger a quicker degradation of the peroxide whitener, thus creating a faster and more enhanced whitening result.

The laser-activated hydrogen peroxide breaks down into water and a radical.

A piece of film resembling clear tape is folded over upper and lower teeth and pressed gently so the teeth are coated with the peroxide substance that is adhered to the back of the "tape."

A tray filled with a peroxide solution is placed over the teeth for a specific amount of time.

The peroxide based fluid is painted onto the teeth and left there for a specific amount of time, generally about 30 minutes.

The peroxide in the toothpaste isn't really on your teeth long enough to make much of a difference.

This activator is mixed with the hydrogen peroxide at the time of application creating a gel with 25% hydrogen peroxide and a ph of 7.5 to 8.5.

Active ingredient is carbamide peroxide available in gel strengths of 10%, 15%, and 20%.

Specialized blue-light system allows them to use a concentration of only 15% hydrogen peroxide.

When teeth are being bleached, the chemical is a type of peroxide and certainly not chlorine.

All tooth whitening products use peroxide to get the job done.

The peroxide cleans both the surface of the tooth and the layer beneath the enamel for a deep clean and a whiter smile.

In order to bleach your teeth using the whitening laser dentistry process, the dentist will first apply a translucent peroxide whitening gel to your teeth.

Regular cleansing with products containing salicylic acid or benzoyl peroxide to kill acne causing bacteria is important for acne treatment.

However, you will want to have some cotton balls and peroxide handy in case you bleed.

Then you apply some hydrogen peroxide, followed by the DermaTend.

If needed, follow cleansing with hydrogen peroxide and an antibacterial cream such as Neosporin.

After getting stung, it is important to make sure you clean the sting site with soap and water, then with either alcohol or peroxide.

You can add peroxide, which doesn't sting, or use alcohol if you can handle the sting.

Many acne treatments, such as benzoyl peroxide, started off as something that could only be acquired via prescription.

Most over-the-counter topical treatments include benzoyl peroxide and clindamycin or erythromycin.

These products often contain salicylic acid or benzoyl peroxide, which help treat pimples and prevent future outbreaks.

Consider a moisturizer for day use that includes benzoyl peroxide.

Benzoyl Peroxide - This acne treatment comes in an effective cream that dries up acne.

Cleansers that contain benzoyl peroxide have shown results in some sufferers.

Avoid rubbing soap directly into the wound and do not use astringents like rubbing alcohol or hydrogen peroxide on the cuts.

It also tends to be gentler than some other popular acne medications, such as benzoyl peroxide.

Its materials are pebbles, clays and sands of various' colours from white to deep red, tinged with peroxide of iron, which sometimes cements the pebbles and sands into compact rocks.

An oxide of composition Ru 4 0 9 is obtained as a black hydrated powder when the peroxide is heated with water for some time.

For example take the oxides of nitrogen, N 2 0, NO, N 2 0 3, NO 2, N 2 0 5; these are known respectively as nitrous oxide, nitric oxide, nitrogen trioxide, nitrogen peroxide and nitrogen pentoxide.

Nitrogen peroxide, NO 2 or N204, may be obtained by mixing oxygen with nitric oxide and passing the red gas so obtained through a freezing mixture.

Nitrogen peroxide is also prepared by heating lead nitrate and passing the products of decomposition through a tube surrounded by a freezing mixture, when the gas liquefies.

Nitrogen peroxide is the most stable oxide of nitrogen.

When this compound is acted on by water, hydrogen peroxide and levulinic aldehyde are formed, the aldehyde being subsequently oxidized by the hydrogen peroxide, forming levulinic acid.

When strongly heated they decompose, forming fatty acids, nitrogen peroxide and nitrogen.

Potassium, for example, yields peroxide, K202 or K204; sodium gives Na202; the barium-group metals, as well as magnesium, cadmium, zinc, lead, copper, are converted into their monoxides MeO.

Titanium trioxide, T103, is obtained as a yellow precipitate by dropping the chloride into alcohol, adding hydrogen peroxide, and finally ammonium carbonate or potash.

When shaken with potash and air it undergoes autoxidation, hydrogen peroxide being formed first, which converts the trioxide into the dioxide and possibly pertitanic acid.

A hydrated dioxide, approximating in composition to SrO 2.8H 2 O, is formed as a crystalline precipitate when hydrogen peroxide is added to an aqueous solution of strontium hydroxide.

In another form of apparatus advantage is taken of the property possessed by sodium-potassium peroxide of giving off oxygen when damped; the residue of caustic soda and potash yielded by the reaction is used to absorb the carbonic acid of the expired air.

Ammonium nitrite, NH 4 NO 2, is formed by oxidizing ammonia with ozone or hydrogen peroxide; by precipitating barium or lead nitrites with ammonium sulphate, or silver nitrite with ammonium chloride.

When dissolved in water it yields some NaOH and H202; on crystallizing a cold 'solution Na202.8H20 separates as large tabular hexagonal crystals, which on drying over sulphuric acid give Na 2 0 2.2H 2 0; the former is also obtained by precipitating a mixture of caustic soda and hydrogen peroxide solutions with alcohol.

Acids yield a sodium salt and free oxygen or hydrogen peroxide; with carbon dioxide it gives sodium carbonate and free oxygen; carbon monoxide gives the carbonate; whilst nitrous and nitric oxides give the nitrate.

We may here notice the "percarbonates" obtained by Wolffenstein and Peltner (Ber., 1908, 41, pp. 2 75, 280) on acting with gaseous or solid carbon dioxide on Na202, Na203 and NaHO 2 at low temperatures; the same authors obtained a perborate by adding sodium metaborate solution to a 50% solution of sodium peroxide previously saturated with carbon dioxide.

The peroxide, Pr 4 O 7, forms a dark brown powder, and is obtained by ignition of the oxalate or nitrate.

However, in 1833, Berzelius reverted to his earlier opinion that oxygenated radicals were incompatible with his electrochemical theory; he regarded benzoyl as an oxide of the radical C 14 H 1Q, which he named " picramyl " (from 7rucp6s, bitter, and &uvyalk, almond), the peroxide being anhydrous benzoic acid; and he dismissed the views of Gay Lussac and Dumas that ethylene was the radical of ether, alcohol and ethyl chloride, setting up in their place the idea that ether was a suboxide of ethyl, (C2H5)20, which was analogous to K 2 0, while alcohol was an oxide of a radical C 2 H 6; thus annihilating any relation between these two compounds.