Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

S8890

Sigma-Aldrich

Sodium bisulfite

ACS reagent

Synonym(s):

Sodium hydrogensulfite

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

About This Item

Empirical Formula (Hill Notation):
NaHSO3
CAS Number:
7631-90-5
Molecular Weight:
104.06
EC Number:
231-548-0
UNSPSC Code:
12352300

grade

ACS reagent

composition

SO2, ≥58.5%

impurities

≤0.005% Insoluble matter

anion traces

chloride (Cl-): ≤0.02%

cation traces

As: ≤1 ppm
Fe: ≤0.002%
heavy metals (as Pb): ≤0.001%

SMILES string

[Na+].OS([O-])=O

InChI

1S/Na.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-2

InChI key

DWAQJAXMDSEUJJ-UHFFFAOYSA-L

Looking for similar products? Visit Product Comparison Guide

Other Notes

Note: This product is usually a mixture of sodium bisulfite and sodium metabisulfite.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

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
121H01003
121H01002
092K0114
076H0055
030K0162

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

Customers Also Viewed

Slide 1 of 1

1 of 1

Sodium sulfite ≥98%

Sigma-Aldrich

S0505

Sodium sulfite

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