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799343

Sigma-Aldrich

Natriummetabisulfit

anhydrous, free-flowing, Redi-Dri™, ReagentPlus®, ≥99%

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:
329768704
NACRES:
NA.21

Qualität

anhydrous
free-flowing

Qualitätsniveau

100

Produktlinie

ReagentPlus®
Redi-Dri™

Assay

≥99%

Form

powder

mp (Schmelzpunkt)

>300 °C (lit.)

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

Redi-Dri™ technology eliminates clumping and the need for complicated procedures to keep your salts free-flowing. Keeping your salts dry helps improve your results by giving accurate measurements and easier-to-handle salts and buffers. Rather than drying your salts in an oven or desiccator or breaking them apart manually, Redi-Dri™ ensures that your salts will remain easy-to-use for months without worrying about anti-caking agents. Even after repeated openings you can be assured that your results are always accurate. Redi-Dri™ saves you time, energy and money by keeping your salts usable for longer!

Leistungsmerkmale und Vorteile

  • Increased efficiency – Eliminate time and effort of loosening hardened powders
  • Safety – Avoid risks of using tools of force to break up clumps
  • Economy – Faster preparation and solvation increase productivity and reduce costs
  • Assured quality – Excellent, expert-tested quality with no anti-caking agents
  • Flexible volumes – Available from research amounts to scale-up quantities

Sonstige Hinweise

As a solid, this product is sodium metabisulfite, Na2S2O5. Dissolved in water, it yields NaHSO3.

Rechtliche Hinweise

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Piktogramme

CorrosionExclamation mark
GHS05,GHS07

Signalwort

Danger

H-Sätze

H302,H318

Gefahreneinstufungen

Acute Tox. 4 Oral - Eye Dam. 1

Zusätzliche Gefahrenhinweise

EUH031

Lagerklassenschlüssel

11 - 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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Natriumdisulfit (sodium metabisulfite) for analysis EMSURE® ACS,Reag. Ph Eur

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Sigma-Aldrich

901916

Natriumsulfit

Natriumbisulfit ACS reagent

Sigma-Aldrich

243973

Natriumbisulfit

Natriumnitrat ACS reagent, ≥99.0%

Sigma-Aldrich

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Natriumnitrat

Polyvinylpyrrolidon average mol wt 40,000

Sigma-Aldrich

PVP40

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Salzsäure 36.5-38.0%, BioReagent, for molecular biology

Sigma-Aldrich

H1758

Salzsäure

Jeffrey N Hemenway et al.
Journal of pharmaceutical sciences, 101(9), 3305-3318 (2012-05-23)
A 2,4-dinitrophenylhydrazine (DNPH) precolumn derivatization high-performance liquid chromatography-ultraviolet detection (HPLC-UV) method was developed to quantify levels of formaldehyde and acetaldehyde in polyethylene glycol (PEG) solutions. Formic acid and acetic acid were quantified by HPLC-UV. Samples of neat and aqueous PEG
Ivana Mara da Costa Machado Matos Carvalho et al.
Chemosphere, 82(7), 1056-1061 (2010-11-09)
Sodium metabisulfite is used in marine shrimp harvesting to prevent the occurrence of black spots. Shrimps are soaked in a sodium metabisulfite solution in ice, which is disposed of in sewages that run into marine canals, creating an environmental hazard.
Gisela Palma-Orozco et al.
Phytochemistry, 72(1), 82-88 (2010-11-23)
While a long shelf life for fruit products is highly desired, enzymatic browning is the main cause of quality loss in fruits and is therefore a main problem for the food industry. In this study polyphenol oxidase (PPO), the main
Ceren Kencebay et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 52, 129-136 (2012-11-22)
We aimed at investigating the effects of sulfite-induced lipid peroxidation and apoptosis mediated by secretory phospholipase A2 (sPLA2) on somatosensory evoked potentials (SEP) alterations in rats. Thirty male albino Wistar rats were randomized into three experimental groups as follows; control
Ilgaz Akdogan et al.
Toxicology and industrial health, 27(9), 771-778 (2011-04-23)
Sulfite, which is continuously formed in the body during metabolism of sulfur-containing amino acids, is commonly used in preservatives. It has been shown that there are toxic effects of sulfite on many cellular components. The aim of this study was
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Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

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