Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

V800388

Sigma-Aldrich

Sodium disulfite

AR, 58.5% SO2 basis

Synonym(s):

Sodium metabisulfite, Sodium disulfite, Sodium pyrosulfite

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
Na2S2O5
CAS Number:
7681-57-4
Molecular Weight:
190.11
EC Number:
231-673-0
MDL number:
MFCD00167602
UNSPSC Code:
12352302
PubChem Substance ID:
329829370
grade:
AR
form:
powder

grade

AR

product line

Vetec™

form

powder

concentration

58.5% SO2

pH

4.5 (20 °C, 50 g/L)

mp

>300 °C (lit.)

anion traces

chloride (Cl-): ≤0.02%

cation traces

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

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

InChI key

HRZFUMHJMZEROT-UHFFFAOYSA-L

Looking for similar products? Visit Product Comparison Guide

Legal Information

Vetec is a trademark of Merck KGaA, Darmstadt, Germany

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302,H318

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Supplementary Hazards

EUH031

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BGBC1080
BGBB9549

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Nikolett Czipa et al.
Journal of food science and technology, 56(3), 1245-1255 (2019-04-09)
This study investigated the effect of different treatments (centrifugation and filtration; heating; adulteration with sugar syrups, and storage) and collection variables (year and region of the country) on the physicochemical properties of 44 Hungarian acacia honeys. The characteristics measured were
B B Gengenbach et al.
Protein expression and purification, 151, 46-55 (2018-06-13)
Cardiovascular diseases are a prevalent cause of morbidity and mortality especially in industrialized countries. The human phosphatase and actin regulator 1 (PHACTR1) may be involved in such diseases, but its precise regulatory function remains unclear due to the large number
T Q Lan et al.
Bioresource technology, 127, 291-297 (2012-11-10)
Lodgepole wood chips were pretreated by sulfite pretreatment to overcome recalcitrance of lignocelluloses (SPORL) at 25% solids loading and 180 °C for 20 min with sulfuric acid and sodium bisulfite charges of 2.2 and 8 wt/wt% on an oven-dry wood
J Y Zhu et al.
Bioresource technology, 102(19), 8921-8929 (2011-08-10)
Native aspen (Populus tremuloides) was pretreated using sulfuric acid and sodium bisulfite (SPORL) and dilute sulfuric acid alone (DA). Simultaneous enzymatic saccharification and fermentation (SSF) was conducted at 18% solids using commercial enzymes with cellulase loadings ranging from 6 to
Hyung Soo Park et al.
Applied and environmental microbiology, 77(19), 6908-6917 (2011-08-23)
Pipelines transporting brackish subsurface water, used in the production of bitumen by steam-assisted gravity drainage, are subject to frequent corrosion failures despite the addition of the oxygen scavenger sodium bisulfite (SBS). Pyrosequencing of 16S rRNA genes was used to determine
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service