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255556

Sigma-Aldrich

Metabisolfito di sodio

ACS reagent, ≥97.0%

Sinonimo/i:

Bisolfito di sodio, Pirosolfito di sodio

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About This Item

Formula condensata:
Na2S2O5
Numero CAS:
Peso molecolare:
190.11
Numero CE:
Numero MDL:
Codice UNSPSC:
12352302
ID PubChem:

Grado

ACS reagent

Saggio

≥97.0%

Forma fisica

chunks
crystalline powder
powder, crystals or granules

Impurezze

≤0.005% insolubles

pH

4.5 (20 °C, 50 g/L)

Punto di fusione

>300 °C (lit.)

Anioni in tracce

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

Cationi in tracce

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

Stringa SMILE

[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
HRZFUMHJMZEROT-UHFFFAOYSA-L

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Altre note

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.

Pittogrammi

CorrosionExclamation mark

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

Acute Tox. 4 Oral - Eye Dam. 1

Rischi supp

Codice della classe di stoccaggio

13 - Non Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves


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