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7722-84-1

7722-84-1 Structure

7722-84-1 Structure
IdentificationMore
[Name]

Hydrogen peroxide
[CAS]

7722-84-1
[Synonyms]

ALBONE
BETZ 0241
CATALASE TEST
HYDROGEN DIOXIDE
HYDROGENII PEROXIDUM
HYDROGEN PEROXIDE 30%
HYDROGEN PEROXIDE
HYDROGEN PEROXIDE 500ML
HYDROGEN PEROXIDE SOLUTION
PERDROGEN
PERHYDROL
PERHYDROL(R)
PERONE
SUPEROXOL
60%solution
60%solutioninwater
Albone 35
Albone 50
Albone 70
Albone DS
[EINECS(EC#)]

231-765-0
[Molecular Formula]

H2O2
[MDL Number]

MFCD00011333
[Molecular Weight]

34.01
[MOL File]

7722-84-1.mol
Chemical PropertiesBack Directory
[Appearance]

colourless liquid
[Melting point ]

-33 °C
[mp ]

-33 °C
[Boiling point ]

108 °C
[bp ]

108 °C
[density ]

1.13 g/mL at 20 °C
[vapor density ]

1.1 (vs air)
[vapor pressure ]

23.3 mm Hg ( 30 °C)
[refractive index ]

1.3350
[Fp ]

107°C
[storage temp. ]

2-8°C
[solubility ]

diethyl ether: soluble
[pka]

11.5(at 25℃)
[form ]

Solution
[color ]

≤10(APHA)
[Stability:]

Slightly unstable-will very slowly decompose. Decomposition is promoted by catalysts and heating, so store cool. Light sensitive, keep in the dark. May contain stabilizer. Reacts with rust, brass, zinc, nickel, finely powdered metals, copper and iron and their alloys.
[Water Solubility ]

miscible
[Merck ]

14,4798
[BRN ]

3587191
[Contact allergens]

Hydrogen peroxide is an oxidizing agent used as a topi- cal antiseptic, and as part of permanent hair-dyes and color-removing preparations, and as a neutralizing agent in permanent waving. The concentration of the hydrogen peroxyde solution is expressed in volume or percentage: Ten volumes correspond to 3%. It is an irritant.
[Uses]

hydrogen peroxide is a bleaching and oxidizing agent, detergent, and antiseptic. It is generally recognized as a safe preservative, germ killer, and skin bleacher in cosmetics. If used undiluted, it can cause burns of the skin and mucous membranes.
[CAS DataBase Reference]

7722-84-1(CAS DataBase Reference)
[NIST Chemistry Reference]

Hydrogen peroxide(7722-84-1)
[EPA Substance Registry System]

7722-84-1(EPA Substance)
Hazard InformationBack Directory
[Chemical Properties]

Colorless liquid; pure compound or 90% solution unstable; bitter taste; density 1.463 g/mL; boils at 150.2°C; freezes at –0.43°C; vapor pressure 9.9 torr at 50°C and 121.5 torr at 100°C; viscosity 1.245 centipoise at 20°C; surface tension 80.4 dyn/cm at 20°C; miscible with water in all proportions; soluble in ether; densities of 30%, 70%, and 90% H2O2 solutions are 1.1081, 1.2839 and 1.3867 g/mL, respectively, at 25°C; freezing points at these concentrations are –25.7°C, –40.3°C and –11.5°C, respectively; and their boiling points are 106.2°C, 125.5°C and 141.3°C, respectively; decomposed by many organic solvents; pKa at 25°C is 11.62.
[Definition]

ChEBI: An inorganic peroxide consisting of two hydroxy groups joined by a covalent oxygen-oxygen single bond.
[General Description]

A colorless liquid dissolved in water. Vapors may irritate the eyes and mucous membranes. May violently decompose on contact with most common metals and their compounds. Contact with combustible material may result in spontaneous ignition. Corrosive to tissue. Under exposure to fire or heat containers may violently rupture due to decomposition. Used to bleach textiles and wood pulp, in chemical manufacturing, food processing, and in water purification.
[Reactivity Profile]

The hazards associated with the use of HYDROGEN PEROXIDE(especially highly concentrated solutions) are well documented. There is a release of enough energy during the catalytic decomposition of 65% peroxide to evaporate all water and ignite nearby combustible materials. Most cellulose materials contain enough catalyst to cause spontaneous ignition with 90% peroxide. Contamination of concentrated peroxide causes the possibility of explosion. Readily oxidizable materials, or alkaline substances containing heavy metals may react violently. Solvents(acetone, ethanol, glycerol) will detonate on mixture with peroxide of over 30% concentration, the violence increasing with concentration. Concentrated peroxide may decompose violently in contact with iron, copper, chromium, and most other metals or their salts, and dust(which frequently contain rust). During concentration under vacuum of aqueous or of aqueous-alcoholic solutions of hydrogen peroxide, violent explosions occurred when the concentration was sufficiently high(>90%), [Bretherick 2nd ed., 1979]. Hydrogen selenide and hydrogen peroxide undergo a very rapid decomposition, [Mellor 1:941(1946-1947)].
[Air & Water Reactions]

Water soluble.
[Health Hazard]

TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Fire may produce irritating and/or toxic gases. Toxic fumes or dust may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Runoff from fire control or dilution water may cause pollution.
[Fire Hazard]

May explode from friction, heat or contamination. These substances will accelerate burning when involved in a fire. May ignite combustibles (wood, paper, oil, clothing, etc.). Some will react explosively with hydrocarbons (fuels). Containers may explode when heated. Runoff may create fire or explosion hazard.
Safety DataBack Directory
[Hazard Codes ]

Xn,C,O
[Risk Statements ]

R22:Harmful if swallowed.
R41:Risk of serious damage to eyes.
R37/38:Irritating to respiratory system and skin .
R34:Causes burns.
R20/22:Harmful by inhalation and if swallowed .
R8:Contact with combustible material may cause fire.
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S39:Wear eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S17:Keep away from combustible material .
[RIDADR ]

UN 2014 5.1/PG 2
[WGK Germany ]

1
[RTECS ]

MX0899500
[TSCA ]

Yes
[HazardClass ]

5.1
[PackingGroup ]

II
[HS Code ]

28470000
[Hazardous Substances Data]

7722-84-1(Hazardous Substances Data)
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Sulfuric acid -->Potassium carbonate-->Potassium hydroxide -->Nitrogen-->Isopropanol-->Hydrogen-->Phosphorous acid-->Aluminum oxide -->Oxygen-->Ammonium persulfate-->Ammonium sulfate-->Anthraquinone-->Ammonium nitrate-->Potassium persulfate-->Aluminium-nickel-->Ammonium hydrogen sulfate-->Bis(2-ethylhexyl) phosphate-->Heavy aromatics-->ALUMINUM OXIDE,ACTIVATED,NEUTRAL,FOR COLUMN CHROMATOGRAPHY,63-200ΜM-->Tris(2-ethylhexyl) phosphate-->2-Ethyl anthraquinone-->DIHYDROTERPINEOL-->AROMATICS
[Preparation Products]

6-Hydroxypicolinic acid-->Sodium perborate-->2-Pyridinol-1-oxide-->Cadmium sulfate-->Cadmium acetate-->polyferric phophat sulfate-->tert-Butyl peroxyacetate-->Erythritol-->Calcium peroxide-->1-Hydroperoxycyclohexyl-1-hydroxycyclohexyl peroxide-->2,6-DIAMINO-3-BROMOPYRIDINE-->Di-(2-ethylhexyl)peroxydicarbonate-->SORBITAN TRIOLEATE-->2-Bromo-3-hydroxy-6-methylpyridine-->TRIMETHYLAMINE N-OXIDE HYDROCHLORIDE-->D(-)-Arabinose-->N,N-Diethylhydroxylamine-->castor oil polyoxyethylene (90) ether-->dodecyl phenyl polyoxyethylene (12) ether-->3-ISOPROPYLPHENOL-->ISOQUINOLINE N-OXIDE-->Sodium pyroantimonate -->2,3-Dimethylpyridine-N-oxide-->3-Bromo-2,6-diaminopyridine ,95%-->3,5-DIBROMOSULFANILAMIDE-->modified soybean phospholipids-->3-METHOXYCATECHOL-->BRIJ(R) 76-->DIHYDROXYTARTARIC ACID-->Thiomorpholine-1,1-dioxide-->trans,trans-2,4-Decadien-1-al-->TRANS-1,2-CYCLOHEXANEDIOL-->LDAO-->Urea hydrogen peroxide -->emulsifier SOPE-6-->OXYCARBOXIN-->PHYSOSTIGMINE-->DIPHENYLCARBAZONE-->DODECANEDIOIC ACID MONOMETHYL ESTER
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

Hydrogen peroxide(7722-84-1).msds
Questions and Answers (Q&A)Back Directory
[History]

Hydrogen peroxide was prepared first by Thenard in 1818. It has many industrial applications. Aqueous solutions at varying concentrations are used for bleaching fabrics, silks, furs, feathers and hair; as a dough conditioner; and a bleaching and oxidizing agent in foods; for cleaning metals; as a laboratory reagent for oxidation; as an antiseptic; in sewage and wastewater treatment; and in preparation of inorganic and organic peroxides. An 80% concentrated solution is used in rocket propulsion.
[Preparation]

Hydrogen peroxide is commercially produced by autooxidation of ethyl anthraquinol in a solvent such as toluene or ethylbenzene. The product ethyl anthraquinone is reduced by hydrogen over supported nickel or platinum catalyst to regenerate back the starting material, ethyl anthraquinol for a continuous production of H2O2. The reaction steps are:


Hydrogen peroxide may also be made by heating 2-propanol with oxygen at 100°C under 10 to 20 atm pressure: (CH3)2CHOH (CH3)2C(OH)OOH → CH3COCH3 + H2O2 Vapor phase partial oxidation of hydrocarbons also yield H2O2. However, several by-products are generated, the separations of which make the process difficult and uneconomical.
Hydrogen peroxide may also be prepared by treating barium peroxide with dilute sulfuric acid:
BaO2 + 2H2SO4 → H2O2 + BaSO4
Another preparative method involves electrolytic conversion of aqueous sulfuric acid to peroxydisulfate followed by hydrolysis to H2O2 (Weissenstein process). The reaction steps are as follows:

2H2SO4 → H2S2O8 + H2
H2SO5 + H2O → H2SO4 + H2SO5 H2SO5 + H2O → H2O2 + H2SO4
An earlier method, which currently is no longer practiced commercially, involved oxidation of phenyl hydrazine: Hydrogen peroxide obtained this way may contain many impurities, depending on the process used. Such impurities are removed by ion exchange, solvent extraction, and distillation. Dilute solutions of H2O2 may be purified
and concentrated by fractional distillation at reduced pressures.
 
[Hazard]

Hydrogen peroxide is a strong oxidizing agent. Concentrated solutions, even a 30% aqueous solution, should be handled carefully. The compound decomposes violently in the presence of trace impurities. Inhibitors are, therefore, added at trace levels to prevent decomposition. Explosion can occur when concentrated solutions are heated or brought in contact with a number of organic substances that are readily oxidizable or that form organic peroxides, such as alcohols, aldehydes, ketones, anhydrides, and carboxylic acids (Patnaik, P. 1999. A Comprehensive Guide to the Hazardous Properties of Chemical Substances, 2nd ed. New York: John Wiley & Sons). Also, reactions with metals, metal alloys, a number of metal salts and oxides, and concentrated mineral acids can proceed to explosive violence.
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

Hydrogen peroxide, 50 wt% solution in water, stabilized, pure(7722-84-1)
[Alfa Aesar]

Hydrogen peroxide, ACS, 29-32% w/w aq. soln., stab.(7722-84-1)
[Sigma Aldrich]

7722-84-1(sigmaaldrich)
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