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13459

Sigma-Aldrich

Natriummetabisulfit

puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E223, dry, 97-100.5%

Synonym(e):

Natriumdisulfit, Natriumpyrosulfit

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About This Item

Lineare Formel:
Na2S2O5
CAS-Nummer:
7681-57-4
Molekulargewicht:
190.11
EG-Nummer:
231-673-0
MDL-Nummer:
MFCD00167602
UNSPSC-Code:
12352302
PubChem Substanz-ID:
329750183
NACRES:
NA.21

Qualität

puriss.
dry
meets analytical specification of Ph. Eur., BP, NF, FCC, E223

Qualitätsniveau

200

Assay

97-100.5%

Form

powder or crystals

Zusammensetzung

SO2, 65.0-67.4%

Verunreinigungen

residue of solvents, complies
≤0.02% thiosulfate (S2O3)

pH-Wert

3.5-5.0 (20 °C, 5%)

mp (Schmelzpunkt)

>300 °C (lit.)

Anionenspuren

chloride (Cl-): ≤100 mg/kg

Kationenspuren

As: ≤2 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤2 mg/kg
Se: ≤5 mg/kg
Zn: ≤10 mg/kg

Eignung

complies for appearance of solution

SMILES String

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

InChI

1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

InChIKey

HRZFUMHJMZEROT-UHFFFAOYSA-L

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Allgemeine Beschreibung

Sodium metabisulfite (MBS, Sodium disulfite) is an inorganic salt. It is the sodium salt of disulphurous (pyrosulfurous) acid. It is widely used as reducing agent in textile and photography industry. It is commonly added to various foods and wines as preservative.

Anwendung

Sodium metabisulfite was used to initiate the cross-linking of polybutadiene in the cores of the vesicle membranes by free radical polymerization in solution. It has been used to prevent the oxidation (as antioxidant) during the preparation of stock solutions of 6-hydroxydopamine in various studies.

Piktogramme

CorrosionExclamation mark
GHS05,GHS07

Signalwort

Danger

H-Sätze

H302,H318

Gefahreneinstufungen

Acute Tox. 4 Oral - Eye Dam. 1

Zusätzliche Gefahrenhinweise

EUH031

Lagerklassenschlüssel

13 - Non Combustible Solids

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Analysenzertifikate (COA)

Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.

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Die Dokumentenbibliothek aufrufen

Zhiliang Cheng et al.
Langmuir : the ACS journal of surfaces and colloids, 24(15), 8169-8173 (2008-06-24)
The ability of chelated Gd to serve as an effective magnetic resonance (MR) contrast agent largely depends on fast exchange rates between the Gd-bound water molecules and the surrounding bulk water. Because water diffuses slowly across lipid bilayers, liposomes with
Johanne Louise Neiiendam et al.
Journal of neurochemistry, 91(4), 920-935 (2004-11-05)
The Neural Cell Adhesion Molecule (NCAM) plays a crucial role in development of the central nervous system regulating cell migration, differentiation and synaptogenesis. NCAM mediates cell-cell adhesion through homophilic NCAM binding, subsequently resulting in activation of the fibroblast growth factor
W Wright et al.
The American review of respiratory disease, 141(6), 1400-1404 (1990-06-01)
Sodium metabisulfite (MBS) is used as a preservative in food and wine and frequently triggers attacks of asthma. To determine the characteristics of responses to inhaled MBS, 30 asthmatic subjects and 16 nonasthmatic subjects inhaled MBS, in concentrations of 6.2
Eagleson M.
Concise Encyclopedia Chemistry, 337-337 (1994)
Laurie H L Sellings et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 23(15), 6295-6303 (2003-07-18)
Convergent evidence suggests that amphetamine (AMPH) exerts its rewarding and locomotor stimulating effects via release of dopamine in the nucleus accumbens. However, there is no consensus as to the relative contributions of core and medial shell subregions to these effects.
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