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Merck
CN

1614396

USP

Sodium metabisulfite

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Sodium disulfite, Sodium pyrosulfite

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About This Item

Linear Formula:
Na2S2O5
CAS Number:
7681-57-4
Molecular Weight:
190.11
NACRES:
NA.24
PubChem Substance ID:
329751116
UNSPSC Code:
41116107
MDL number:
MFCD00167602

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Product Name

Sodium metabisulfite, United States Pharmacopeia (USP) Reference Standard

InChI

1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

SMILES string

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

InChI key

HRZFUMHJMZEROT-UHFFFAOYSA-L

grade

pharmaceutical primary standard

API family

sodium metabisulfite

manufacturer/tradename

USP

mp

>300 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

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Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Other Notes

Sales restrictions may apply.
USP issued SDS can be found here.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

hcodes

H302,H318

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

supp_hazards

EUH031

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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