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71883

Sigma-Aldrich

Sodium peroxide

for Wurzschmitt-decomposition, ACS reagent, beads (small), ≥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:
12352303
PubChem Substance ID:
329763611
NACRES:
NB.24

grade

ACS reagent
for Wurzschmitt-decomposition

Quality Level

200

Assay

≥95% (RT)
≥95%

form

beads (small)

impurities

≤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

Ag: ≤5 mg/kg
Al: ≤20 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤500 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤200 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤10 mg/kg
Pb: ≤5 mg/kg
Sr: ≤10 mg/kg
Tl: ≤5 mg/kg
Zn: ≤5 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 reacting sodium atoms and oxygen molecules at high dilution in argon. Its IR spectral studies have been reported. It is a strong oxidizing agent.

Application

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

Analysis Note

may contain particles (Fe, Ni)

Other Notes

Wurzschmitt decomposition; decomposition of ores by fusion

Pictograms

Flame over circleCorrosion
GHS03,GHS05

Signal Word

Danger

Hazard Statements

H271,H314

Hazard Classifications

Ox. Sol. 1 - Skin Corr. 1A

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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R. Bock
Aufschlussmethoden der anorg. & org. Chemie (1972)
Eagleson M.
Concise Encyclopedia Chemistry, 1080-1080 (1994)
Z. Sulcek et al.
Methods of Decomposition in Inorganic Analysis (1989)
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)
Infrared spectra and bonding in the sodium superoxide and sodium peroxide molecules.
Andrews L.
The Journal of Physical Chemistry, 73(11), 3922-3928 (1969)
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