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7722-84-1

Supplier Related Products Identification Chemical Properties Hazard Information Safety Data Raw materials And Preparation Products Material Safety Data Sheet(MSDS) Questions and Answers (Q&A) Questions And Answer Well-known Reagent Company Product Information

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Identification

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 Properties

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 Information

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 Data

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 Products

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)

Questions and Answers (Q&A)

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.

Questions And Answer

Uses
Hydrogen peroxide (H2O2) in a purified form is explosive. In a dilute form in water, it is used as an antiseptic and oxidizing agent.

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