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S4672

Sigma-Aldrich

Sodium sulfite

BioXtra, ≥98%

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Synonym(s):
Natrium sulfite, Sodium sulphite
Linear Formula:
Na2SO3
CAS Number:
Molecular Weight:
126.04
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

product line

BioXtra

Quality Level

Assay

≥98%

form

powder or crystals

impurities

≤0.005% Insoluble matter
≤5 ppm Phosphorus (P)

solubility

H2O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤0.02%

cation traces

Al: ≤5 ppm
Ca: ≤0.01%
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤0.05%
Mg: ≤0.005%
NH4+: ≤0.05%
Pb: ≤10 ppm
Zn: ≤5 ppm

SMILES string

[Na+].[Na+].[O-]S([O-])=O

InChI

1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2

InChI key

GEHJYWRUCIMESM-UHFFFAOYSA-L

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This Item
71988S6547204447
Sodium sulfite BioXtra, ≥98%

Sigma-Aldrich

S4672

Sodium sulfite

Premium Grade
Sodium sulfite BioUltra, anhydrous, ≥98% (RT)

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71988

Sodium sulfite

Premium Grade
Sodium sulfate BioXtra, ≥99.0%

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S6547

Sodium sulfate

Premium Grade
Sodium sulfate ≥99.99% trace metals basis

Sigma-Aldrich

204447

Sodium sulfate

-
form

powder or crystals

form

powder

form

powder

form

powder

impurities

≤0.005% Insoluble matter, ≤5 ppm Phosphorus (P)

impurities

insoluble matter, passes filter test

impurities

≤0.0005% Phosphorus (P), ≤0.01% Insoluble matter

impurities

≤100.0 ppm Trace Metal Analysis

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

H2O: 1 M, clear, colorless

solubility

ethanol: insoluble(lit.)

anion traces

chloride (Cl-): ≤0.02%

anion traces

chloride (Cl-): ≤50 mg/kg, thiosulfate (S2O32-): ≤200 mg/kg

anion traces

chloride (Cl-): ≤0.001%

anion traces

-

cation traces

Al: ≤5 ppm, Ca: ≤0.01%, Cu: ≤5 ppm, Fe: ≤5 ppm, K: ≤0.05%, Mg: ≤0.005%, NH4+: ≤0.05%, Pb: ≤10 ppm, Zn: ≤5 ppm

cation traces

Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 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: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

cation traces

Al: ≤0.0005%, Ca: ≤0.005%, Cu: ≤0.0005%, Fe: ≤0.0005%, K: ≤0.005%, Mg: ≤0.005%, NH4+: ≤0.05%, Pb: ≤0.001%, Zn: ≤0.001%

cation traces

-

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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