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255556

Sigma-Aldrich

Sodium metabisulfite

ACS reagent, ≥97.0%

Sinônimo(s):

Sodium disulfite, Sodium pyrosulfite

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About This Item

Fórmula linear:
Na2S2O5
Número CAS:
7681-57-4
Peso molecular:
190.11
Número CE:
231-673-0
Número MDL:
MFCD00167602
Código UNSPSC:
12352302
ID de substância PubChem:
24855463

grau

ACS reagent

Ensaio

≥97.0%

forma

chunks
crystalline powder
powder, crystals or granules

Impurezas

≤0.005% insolubles

pH

4.5 (20 °C, 50 g/L)

pf

>300 °C (lit.)

traços de ânion

chloride (Cl-): ≤0.05%
thiosulfate (S2O32-): ≤0.05%

traços de cátion

Fe: ≤0.002%
heavy metals (as Pb): ≤0.001%

cadeia de caracteres SMILES

[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

chave InChI

HRZFUMHJMZEROT-UHFFFAOYSA-L

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Outras notas

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.

Pictogramas

CorrosionExclamation mark
GHS05,GHS07

Palavra indicadora

Danger

Frases de perigo

H302,H318

Classificações de perigo

Acute Tox. 4 Oral - Eye Dam. 1

Perigos de suplementos

EUH031

Código de classe de armazenamento

13 - Non Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves

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Certificados de análise (COA)

Lot/Batch Number
BCBJ7031V
BCBJ2453V
MKBL3608V
BCBD1876V
MKBJ7687V

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Se precisar de uma versão específica, você pode procurar um certificado específico pelo número do lote ou da remessa.

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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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