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31454

Sodium sulfite

puriss. p.a., reag. Ph. Eur., anhydrous, 98-100.0% (iodometric)

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About This Item

Linear Formula:
Na2SO3
CAS Number:
7757-83-7
Molecular Weight:
126.04
NACRES:
NA.21
PubChem Substance ID:
329753771
UNSPSC Code:
12352302
EC Number:
231-821-4
MDL number:
MFCD00003503
Assay:
98-100.0% (iodometric)
Form:
solid

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Product Name

Sodium sulfite, puriss. p.a., reag. Ph. Eur., anhydrous, 98-100.0% (iodometric)

InChI key

GEHJYWRUCIMESM-UHFFFAOYSA-L

InChI

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

SMILES string

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

agency

USP/NF
reag. Ph. Eur.

grade

puriss. p.a.

assay

98-100.0% (iodometric)

form

solid

impurities

≤0.001% heavy metals (as Pb)
≤0.02% thiosulfate (S2O3)

pH

9.0-10.5 (25 °C, 126 g/L)

anion traces

chloride (Cl-): ≤50 mg/kg

cation traces

As: ≤0.2 mg/kg
Ca: ≤50 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Pb: ≤5 mg/kg
Se: ≤10 mg/kg
Zn: ≤10 mg/kg

Quality Level

100

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1 of 4

This Item
23932113471S0505
Sodium sulfite puriss. p.a., reag. Ph. Eur., anhydrous, 98-100.0% (iodometric)

Sigma-Aldrich

31454

Sodium sulfite

Sodium sulfite ACS reagent, ≥98.0%

Sigma-Aldrich

239321

Sodium sulfite

Sodium sulfite puriss., meets analytical specification of Ph. Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)

Sigma-Aldrich

13471

Sodium sulfite

Sodium sulfite ≥98%

Sigma-Aldrich

S0505

Sodium sulfite

form

solid

form

powder or crystals

form

solid

form

powder or crystals

assay

98-100.0% (iodometric)

assay

≥98.0%

assay

95.0-100.0% (iodometric)

assay

≥98%

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

100

grade

puriss. p.a.

grade

-

grade

puriss.

grade

-

impurities

≤0.001% heavy metals (as Pb), ≤0.02% thiosulfate (S2O3)

impurities

Free acid, passes test, ≤0.005% insolubles, ≤0.03 meq/g Titr. free base

impurities

residual solvents, complies, ≤0.001% heavy metals (as Pb), ≤0.05% thiosulfate (S2O3)

impurities

-

anion traces

chloride (Cl-): ≤50 mg/kg

anion traces

chloride (Cl-): ≤0.02%

anion traces

chloride (Cl-): ≤200 mg/kg

anion traces

-

Application

Sodium sulfite was used in the preparation of films based on wheat gluten.[1]

General description

Sodium sulfie is an inorganic sodium salt. Rapid-mixing method has been proposed to investigate kinetics of the reaction between oxygen and sodium sulfite.[2]

supp_hazards

EUH031

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV9233
MKCW8521
0000246227
0000246227
MKCR2699

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New plasticizers for wheat gluten films.
Irissin-Mangata J, et al.
European Polymer Journal, 37(8), 1533-1541 (2001)
Reaction kinetics of sodium sulfite oxidation by the rapid-mixing method.
Barron CH and O'Hern HA.
Chemical Engineering Science, 21(5), 397-404 (1966)
Amber R Boles et al.
Biotechnology and bioengineering, 109(3), 637-646 (2011-10-22)
A novel sulfur-utilizing perchlorate reducing bacterial consortium successfully treated perchlorate (ClO₄⁻) in prior batch and bench-scale packed bed reactor (PBR) studies. This study examined the scale up of this process for treatment of water from a ClO ₄⁻ and RDX contaminated
Biwu Liu et al.
ACS applied materials & interfaces, 7(44), 24833-24838 (2015-10-23)
Although DNA has been quite successful in metal cation detection, anion detectioin remains challenging because of the charge repulsion. Metal oxides represent a very important class of materials, and different oxides might interact with anions differently. In this work, a
Jingang Wang et al.
Chemosphere, 91(3), 351-357 (2012-12-26)
This paper presents a simple, easy and reliable method for determination of EDTA (ethylenediaminetetraacetic acid) in aqueous system. Using EDTA chelating with ferric irons, an excessive amount of Fe(3+) was added to EDTA solution, and Fe(3+) in excess was reduced
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