Skip to Content
MilliporeSigma
All Photos(1)

Documents

M5801

Sigma-Aldrich

3-Mercaptopropionic acid

≥99%

Sign Into View Organizational & Contract Pricing

Synonym(s):
3-sulfanylpropanoic acid
Linear Formula:
HSCH2CH2CO2H
CAS Number:
Molecular Weight:
106.14
Beilstein/REAXYS Number:
773807
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23

vapor pressure

0.04 mmHg ( 20 °C)

assay

≥99%

form

liquid

autoignition temp.

662 °F

refractive index

n20/D 1.492 (lit.)

bp

110-111 °C/15 mmHg (lit.)

mp

15-18 °C (lit.)

density

1.218 g/mL at 25 °C (lit.)

SMILES string

OC(=O)CCS

InChI

1S/C3H6O2S/c4-3(5)1-2-6/h6H,1-2H2,(H,4,5)

InChI key

DKIDEFUBRARXTE-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

3-Mercaptopropionic acid (3-MPA) is used as a self-assembled monolayer (SAM) with a thiol and carboxylic groups. It has short carbon chains and is mainly used as a capping agent on a variety of nanoparticles.

Application

3-MPA is used to produce hydrophilic SAMs, which are terminated with carboxylic acids and can be further functionalized to introduce more complex end groups such as enzymes for biosensor applications. SAMs of 3-MPA are capped on ZnSe quantum dots for the electrochemical detection of dopamine. 3-MPA is used as a capping agent on CdTe quantum dot nanocrystals (QD NCs) for use as labeling materials in biomedical applications. It can also be used to modify the surface of iron oxide nanoparticles (Fe2O3) in the extraction and preconcentration of Al3+ and Cr3+ ions from different biological samples.

pictograms

Skull and crossbonesCorrosion

signalword

Danger

Hazard Classifications

Acute Tox. 3 Oral - Acute Tox. 4 Inhalation - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

wgk_germany

WGK 1

flash_point_f

closed cup

flash_point_c

closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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?

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

Visit the Document Library

Customers Also Viewed

Slide 1 of 2

1 of 2

3-Mercapto-1-propanol 95%

Sigma-Aldrich

405736

3-Mercapto-1-propanol

Phthaldialdehyde ≥97% (HPLC), powder or crystals

Sigma-Aldrich

P1378

Phthaldialdehyde

Enhancement effect of illumination on the photoluminescence of water-soluble CdTe nanocrystals: Toward highly fluorescent CdTe/CdS core- shell structure.
Bao H, et al.
Chemistry of Materials, 16(20), 3853-3859 (2004)
Coating aqueous quantum dots with silica via reverse microemulsion method: toward size-controllable and robust fluorescent nanoparticles.
Yang Y, et al.
Chemistry of Materials, 19(17), 4123-4128 (2007)
Pedrosa, V. A.; Caetano, J.; Machado, S. A. S.; Freire, R. S.; Bertotti, M.
Electroanalysis, 19, 1415-1420 (2007)
Atomic absorption spectrometric determination of Al3+ and Cr3+ after preconcentration and separation on 3-mercaptopropionic acid modified silica coated-Fe3O4 nanoparticles.
Mashhadizadeh MH and Amoli-Diva M
Journal of Analytical Atomic Spectrometry, 28(2), 251-258 (2013)
A potential masking approach in the detection of dopamine on 3-mercaptopropionic acid capped ZnSe quantum dots modified gold electrode in the presence of interferences.
Ndangili PM, et al.
Journal of Electroanalytical Chemistry, 643(1-2), 77-81 (2010)

Articles

Professor Aran discusses engineering graphene-based materials through careful functionalization, enabling diverse applications.

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