Key Documents

View All Documentation

Sodium iodoacetate

Name: Sodium iodoacetate
Brand: SIGMA
Price: 240 USD
Availability: InStock

powder, ≥98%

Synonym(s):

Iodoacetic acid sodium salt

Select a Size

Change View

Size/SKU	Availability	Price
5 g	Estimated to ship onMay 26, 2026fromMILWAUKEE	$240.00
25 g	Estimated to ship onMay 26, 2026fromMILWAUKEE	$905.00

About This Item

Linear Formula:

ICH₂COONa

CAS Number:

305-53-3

Molecular Weight:

207.93

NACRES:

NA.77

PubChem Substance ID:

24896151

UNSPSC Code:

12352202

EC Number:

206-165-7

MDL number:

MFCD00002686

Beilstein/REAXYS Number:

4009322

$240.00

Estimated to ship onMay 26, 2026Details

Technical Service

Need help? Our team of experienced scientists is here for you.

Let Us Assist

Properties

Product Name

Sodium iodoacetate, ≥98%, BioUltra

biological source

synthetic (organic)

Quality Segment

200

product line

BioUltra

assay

≥98%

form

powder

impurities

≤0.0005% Phosphorus (P), ≤0.1% Insoluble matter

mp

208 °C (dec.) (lit.)

solubility

H₂O: 0.5 M, clear, colorless

anion traces

sulfate (SO₄^2-): ≤0.05%

cation traces

Al: ≤0.0005%, Ca: ≤0.001%, Cu: ≤0.001%, Fe: ≤0.0005%, K: ≤0.02%, Mg: ≤0.0005%, NH₄⁺: ≤0.05%, Pb: ≤0.001%, Zn: ≤0.0005%

storage temp.

−20°C

SMILES string

[Na+].[O-]C(=O)CI

InChI

1S/C2H3IO2.Na/c3-1-2(4)5;/h1H2,(H,4,5);/q;+1/p-1

InChI key

AGDSCTQQXMDDCV-UHFFFAOYSA-M

Description

Application

Reagent for the modification of cysteine residues in proteins.

Reagent for the modification of cysteine residues in proteins. Used in protein sequencing (including by Sanger in sequencing bovine insulin) to prevent oxidation of -SH sidechains.

Reagent for the modification of cysteine residues in proteins. Used to induce animal osteoarthritis model system, which mimics both symptoms and histopathology of the human disease.

Compare Similar Items

View Full Comparison

Show Differences

1 of 1

This Item	I2512	57858	I4386
Sigma-Aldrich I9148 Sodium iodoacetate	Sigma-Aldrich I2512 Sodium iodoacetate	Sigma-Aldrich 57858 Sodium iodoacetate	Sigma-Aldrich I4386 Iodoacetic acid
biological source synthetic (organic)	biological source synthetic (organic)	biological source -	biological source synthetic
assay ≥98%	assay ≥98%	assay ≥99.5% (NT)	assay ≥98.0% (T)
Quality Level 200	Quality Level 200	Quality Level 100	Quality Level 200
form powder	form powder	form -	form powder or flakes
solubility H₂O: 0.5 M, clear, colorless	solubility H₂O: 100 mg/mL	solubility methanol: 0.1 M at 20 °C, clear, colorless	solubility H₂O: soluble, clear to hazy
storage temp. −20°C	storage temp. −20°C	storage temp. −20°C	storage temp. −20°C

Still not finding the right product?

Explore all of our products under Sodium iodoacetate

pictograms

GHS06,GHS05

signalword

Danger

hcodes

H301,H314

pcodes

P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363

Hazard Classifications

Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

406.4 °F

flash_point_c

208 °C

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documents section.

If you need assistance, please contact Customer Support

Already Own This Product?

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