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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

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
SLCB1168
SLBX7685
SLCB0472
SLBR6966V

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Natriumbisulfit ACS reagent

Sigma-Aldrich

243973

Natriumbisulfit

Natriumnitrat ACS reagent, ≥99.0%

Sigma-Aldrich

221341

Natriumnitrat

Polyvinylpyrrolidon average mol wt 40,000

Sigma-Aldrich

PVP40

Polyvinylpyrrolidon

Salzsäure 36.5-38.0%, BioReagent, for molecular biology

Sigma-Aldrich

H1758

Salzsäure

David W Roberts et al.
Contact dermatitis, 66(3), 123-127 (2012-02-11)
Skin-sensitizing chemicals that cause allergic contact dermatitis do so by reacting with self-proteins such that the modified structure becomes antigenic. The reaction chemistry involved is well characterized, but there are exceptions, such as the occasional allergen sodium metabisulfite. To identify
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
I U Nieves et al.
Bioresource technology, 102(13), 6959-6965 (2011-05-03)
Microaeration (injecting air into the headspace) improved the fermentation of hemicellulose hydrolysates obtained from the phosphoric acid pretreatment of sugarcane bagasse at 170°C for 10 min. In addition, with 10% slurries of phosphoric acid pretreated bagasse (180°C, 10 min), air
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.
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
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Artikel

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.

Unser Team von Wissenschaftlern verfügt über Erfahrung in allen Forschungsbereichen einschließlich Life Science, Materialwissenschaften, chemischer Synthese, Chromatographie, Analytik und vielen mehr..

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