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31445

Sigma-Aldrich

Sodium peroxide

puriss. p.a., ACS reagent, reag. ISO, ≥95%

Synonym(s):

Sodium superoxide

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About This Item

Empirical Formula (Hill Notation):
Na2O2
CAS Number:
1313-60-6
Molecular Weight:
77.98
EC Number:
215-209-4
MDL number:
MFCD00003497
UNSPSC Code:
12352300
PubChem Substance ID:
329753769
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

Quality Level

100

Agency

reag. ISO

Assay

≥95%

form

powder

impurities

≤0.002% heavy metals (as Pb)
≤0.003% total nitrogen (N)

pH

12.8 (20 °C, 100 g/L)

mp

460 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤20 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤10 mg/kg

cation traces

Al: ≤10 mg/kg
Fe: ≤20 mg/kg

SMILES string

[Na+].[Na+].[O-][O-]

InChI

1S/2Na.O2/c;;1-2/q2*+1;-2

InChI key

PFUVRDFDKPNGAV-UHFFFAOYSA-N

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General description

Sodium peroxide (Sodium superoxide) has been synthesized by the matrix reaction of sodium atoms and oxygen molecules at high dilution in argon. Its IR spectral studies have been reported.

Application

Sodium peroxide may be used for the isotope dilution inductively coupled plasma mass spectrometric quantification of Ru, Pd, Ir, Pt and rare earth elements (such as Y, Th, Zr, Hf, Nb and Ta) in various geological samples.

Pictograms

Flame over circleCorrosion
GHS03,GHS05

Signal Word

Danger

Hazard Statements

H271 - H314

Hazard Classifications

Ox. Sol. 1 - Skin Corr. 1A

Storage Class Code

5.1A - Strongly oxidizing hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Determination of platinum, palladium, ruthenium and iridium in geological samples by isotope dilution inductively coupled plasma mass spectrometry using a sodium peroxide fusion and tellurium coprecipitation
Enzweiler J, et al.
Analyst, 120(5), 1391-1396 (1995)
Determination of Rare Earth Elements, Y, Th, Zr, Hf, Nb and Ta in Geological Reference Materials G-2, G-3, SCo-1 and WGB-1 by Sodium Peroxide Sintering and Inductively Coupled Plasma-Mass Spectrometry.
Meisel T, et al.
Geostandards Newsletter, 26(1), 53-61 (2002)
Infrared spectra and bonding in the sodium superoxide and sodium peroxide molecules.
Andrews L.
The Journal of Physical Chemistry, 73(11), 3922-3928 (1969)
R J Calvert et al.
The American journal of clinical nutrition, 49(5), 901-903 (1989-05-01)
A safer method of oxidation of Cr2O3-containing fecal samples from transit-time studies was developed using sodium peroxide to replace perchloric acid as the oxidizing agent. The percentage recovery of Cr2O3 with this method was compared with that of perchloric acid
Tianji Li et al.
Environmental science & technology, 39(24), 9665-9668 (2006-02-16)
We tested a mixture of NaOH and carbon and found it to react rapidly with NO gas, thus demonstrating a promising new method of flue gas denitrification (FGD). We determined the reaction products: gas phases were analyzed by GC-MS and
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