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1304-29-6

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Basic Information
CAS No.: 1304-29-6
Name: Barium peroxide
Article Data: 126
Molecular Structure:
Molecular Structure of 1304-29-6 (Barium peroxide)
Formula: BaO2
Molecular Weight: 169.329
Synonyms: Bariumoxide (BaO2);Barium peroxide(Ba(O2));
EINECS: 215-128-4
Density: 4.96 g/cm3
Melting Point: 450 °C
Boiling Point: 150.2 °C at 760 mmHg
Flash Point: 21 °C
Solubility: Insoluble in water
Appearance: greyish white powder
Hazard Symbols: OxidizingO,HarmfulXn
Risk Codes: 8-20/22
Safety: 13-27
Transport Information: UN 1449 5.1/PG 2
PSA: 46.12000
LogP: -0.23760
Synthetic route

barium(II) oxide

1304-29-6

barium peroxide

Conditions
ConditionsYield
With water at 500-600°C; with oxygen containing 0.001g H2O/l;100%
With water at 400°C with oxygen containing 0.001g H2O/l;94.6%
With water at 750°C with oxygen containing 0.001g H2O/l;61.9%

barium hexammine

A

1304-29-6

barium peroxide

B

barium(II) oxide

Conditions
ConditionsYield
With oxygen -35°C;A 7.5%
B 92.5%
With oxygen -50°C;A 9.1%
B 90.9%
With oxygen at low temp.;
7440-39-3

barium

A

1304-29-6

barium peroxide

B

barium(II) oxide

Conditions
ConditionsYield
In ammonia conducting oxygen into Ba soln. in NH3 liq.;A 9.07%
B n/a
7440-39-3

barium

1304-29-6

barium peroxide

Conditions
ConditionsYield
Kinetics; byproducts: oxygen; Ba-atoms and O3-molecules are brought to reaction in crossed molecular beams to form BaO2 and O-atoms at high collision energies. Lower collision energies lead to BaO and O2 as products.; Reaction products are detected by quadrupole mass spectrometry.;

barium(II) hydroxide

1304-29-6

barium peroxide

Conditions
ConditionsYield
In not given Electrolysis; electrolysis of Ba(OH)2-solution at 0-12°C at using of a diaphragma; the used solution is treated before and during the electrolysis with O3-containing O2 or ozonated CO2-free air; BaO2 ppts.;;
In not given Electrolysis; electrolysis of Ba(OH)2-solution at 0-12°C at using of a diaphragma; the used solution is treated before and during the electrolysis with O3-containing O2 or ozonated CO2-free air; BaO2 ppts.;;

barium carbonate

A

1304-29-6

barium peroxide

B

barium(II) oxide

Conditions
ConditionsYield
With pyrographite exclusion of air, annealing while passing steam into react. mixt.;
With pyrographite exclusion of air, annealing while passing steam into react. mixture;
With pyrographite exclusion of air, annealing while passing steam into react. mixt.;

barium carbonate

1304-29-6

barium peroxide

Conditions
ConditionsYield
gentle glowing;
heating;

barium carbonate

1304-29-6

barium peroxide

Conditions
ConditionsYield
In neat (no solvent) inert conditions, thermal decompg. of BaCO3 (1373 K, 10**(-2) Pa, 100 h), then dry O2 atmosphere (623 -673 K, 100 h, several regrindings); detd. by X-ray diffraction;
With air In neat (no solvent) heating of a mixture of BaCO3 and soot forms BaO; treatment of the hot BaO with air;;

barium(II) oxide

A

barium hypochlorite

B

1304-29-6

barium peroxide

C

barium(II) chloride

Conditions
ConditionsYield
With chlorine In neat (no solvent) Cl2 reacts with BaO at grinding under formation of an instable addition-compound which decomposites to BaO2, BaCl2 and a trace of Ba(ClO)2;;A <1
B n/a
C n/a
With Cl2 In neat (no solvent) Cl2 reacts with BaO at grinding under formation of an instable addition-compound which decomposites to BaO2, BaCl2 and a trace of Ba(ClO)2;;A <1
B n/a
C n/a
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Consensus Reports

Reported in EPA TSCA Inventory. Barium and its compounds are on the Community Right-To-Know List.

Standards and Recommendations

OSHA PEL: TWA 0.5 mg(Ba)/m3
ACGIH TLV: TWA 0.5 mg(Ba)/m3; Not Classifiable as a Human Carcinogen
DFG MAK: 0.5 mg(Ba)/m3
DOT Classification:  5.1; Label: Oxidizer, Poison

Specification

The systematic name of this chemical is barium dioxidanediide. With the CAS registry number 1304-29-6, it is also named as Peroxyde de baryum. The product's categories are industrial / fine chemicals; inorganics; oxidation; peroxides; synthetic reagents. It is greyish white powder which is insoluble in water. In addition, it is noncombustible, but accelerates the burning of combustible material. Barium peroxide is one of the most common inorganic peroxides, and it is a peroxide, containing O22- subunits wherein the oxygen atoms bond to each other as well as to the barium. Furthermore, it is not compatible with reducing agents, acids, bases, acetic anhydride, finely powdered metals, hydroxylamine, organic materials, and you must not take it combustible materials, heat and incompatible materials. This chemical should be sealed in the container and stored in the cool and dry place.

The other characteristics of this product can be summarized as: (1)ACD/LogP: -0.43; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.42; (4)ACD/LogD (pH 7.4): -0.42; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)#H bond acceptors: 2; (8)#H bond donors: 2; (9)#Freely Rotating Bonds: 1; (10)Enthalpy of Vaporization: 45.09 kJ/mol; (11)Boiling Point: 150.2 °C at 760 mmHg; (12)Vapour Pressure: 1.48 mmHg at 25°C.

Preparation of Barium peroxide: It can be obtained by the reversible absorption of O2 by barium oxide. The oxygen is released above 500°C. 2 BaO + O2 = 2 BaO2

Uses of Barium peroxide: It is used for bleaching. And it is also used in fireworks as an oxidizer, which also gives a vivid green colour, as do all barium compounds.

When you are using this chemical, please be cautious about it as the following:
It may cause fire when contact with combustible material. And it is harmful by inhalation and if swallowed, so peopel should keep away from food, drink and animal foodstuffs. Additionally, it should kept away from combustible material.

People can use the following data to convert to the molecule structure.
1. SMILES:[Ba+2].[O-][O-]
2. InChI:InChI=1/Ba.O2/c;1-2/q+2;-2 
3. InChIKey:ZJRXSAYFZMGQFP-UHFFFAOYAZ

The following are the toxicity data which has been tested.

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 subcutaneous 50mg/kg (50mg/kg)   Zhurnal Vsesoyuznogo Khimicheskogo Obshchestva im. D.I. Mendeleeva. Journal of the D.I. Mendeleeva All-Union Chemical Society. Vol. 19, Pg. 186, 1974.