Merck
CN
All Photos(1)

Documents

55777

Supelco

Potassium disulfite

analytical standard

Sign Into View Organizational & Contract Pricing
All Photos(1)
Synonym(s):
E224, Potassium metabisulfite, Potassium pyrosulfite
Linear Formula:
K2S2O5
CAS Number:
16731-55-8
Molecular Weight:
222.32
EC Number:
240-795-3
MDL number:
MFCD00167605
PubChem Substance ID:
329758155
NACRES:
NA.24

grade

analytical standard

Quality Level

100

Assay

≥98% (RT)

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

solubility

H2O: 200 mg/mL, clear to very slightly hazy, colorless

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

SMILES string

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

InChI

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

InChI key

RWPGFSMJFRPDDP-UHFFFAOYSA-L

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Potassium disulfite (Potassium metabisulfite, PMB) is an inorganic salt with antimicrobial properties. It is a sulfiting agent that prevents browning of foods.

Application

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H318 - H335

Hazard Classifications

Eye Dam. 1 - STOT SE 3

Target Organs

Respiratory system

Supplementary Hazards

EUH031

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Sven Hildebrand et al.
Scientific reports, 9(1), 10880-10880 (2019-07-28)
Optical clearing techniques and light sheet microscopy have transformed fluorescent imaging of rodent brains, and have provided a crucial alternative to traditional confocal or bright field techniques for thin sections. However, clearing and labeling human brain tissue through all cortical

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