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Merck

31454

Sodium sulfite

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

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500 G

CZK 1,300.00

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About This Item

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

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Agency

USP/NF
reag. Ph. Eur.

Quality Level

100

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

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
239321S0505S4672
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 ≥98%

Sigma-Aldrich

S0505

Sodium sulfite

Sodium sulfite BioXtra, ≥98%

Sigma-Aldrich

S4672

Sodium sulfite

form

solid

form

powder or crystals

form

powder or crystals

form

powder or crystals

assay

98-100.0% (iodometric)

assay

≥98.0%

assay

≥98%

assay

≥98%

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

200

grade

puriss. p.a.

grade

-

grade

-

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

-

impurities

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

anion traces

chloride (Cl-): ≤50 mg/kg

anion traces

chloride (Cl-): ≤0.02%

anion traces

-

anion traces

chloride (Cl-): ≤0.02%

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.[1]

Application

Sodium sulfite was used in the preparation of films based on wheat gluten.[2]

Supplementary Hazards

EUH031

Storage Class Code

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
Michelle Cilia et al.
PloS one, 7(10), e48177-e48177 (2012-11-03)
Circulative transmission of viruses in the Luteoviridae, such as cereal yellow dwarf virus (CYDV), requires a series of precisely orchestrated interactions between virus, plant, and aphid proteins. Natural selection has favored these viruses to be retained in the phloem to
Qiang Yang et al.
Bioresource technology, 126, 336-340 (2012-11-06)
Agave americana is one of commonly grown agave species but currently less valuable because its large flower stalk cannot be used for producing alcoholic beverage. In the present study, the stalk was pretreated with dilute acid (DA), sulfite (SPORL), and
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