4-Mercaptobenzoic acid Chemical Properties

Melting point:

215-224 °C (lit.)

Boiling point:

314.3±25.0 °C(Predicted)

Density 

1.345±0.06 g/cm3(Predicted)

storage temp. 

Hygroscopic, Refrigerator, Under Inert Atmosphere

solubility 

soluble in Alcohol,Ether

form 

powder to crystal

pka

4.05±0.10(Predicted)

color 

White to Yellow to Green

Stability:

Store Under Argon; Air and Temperature Sensitive

CAS DataBase Reference

1074-36-8(CAS DataBase Reference)

NIST Chemistry Reference

Benzoic acid, 4-mercapto-(1074-36-8)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

RIDADR 

UN 3335

WGK Germany 

3

Hazard Note 

Irritant

HS Code 

29309099

MSDS

• Language:English Provider:SigmaAldrich

4-Mercaptobenzoic acid Usage And Synthesis

Chemical Properties

Cream Colour Crystalline Solid

Uses

Gold nanostructures functionalized with 4-Mercaptobenzoic acid (4-MBA) may exhibit improve catalytic activity. Several studies report 4-MBA as a model analyte for surface enhancement Raman scattering (SERS) substrates.

General Description

4-mercaptobenzoic acid (4-MBA) is a probe molecule with thiol and carboxylic groups that form a self-assembled monolayers (SAMs) which can be used for the development of surface enhanced raman spectroscopy (SERS) sensors.

References

[1] BRIAN T SCARPITTI. Comparison of 4-Mercaptobenzoic Acid Surface-Enhanced Raman Spectroscopy-Based Methods for pH Determination in Cells.[J]. Applied Spectroscopy, 2020, 74 11: 1423-1432. DOI:10.1177/0003702820950768.
[2] YU YUN WANG, STEPHEN B. CRONIN* Measuring Local pKa and pH Using Surface Enhanced Raman Spectroscopy of 4-Mercaptobenzoic Acid[J]. Langmuir, 2023, 39 47: 16807-16811. DOI:10.1021/acs.langmuir.3c02073.
[3] RAFAEL DA FONSECA ALVES . Synthesis and characterization of a material derived from 4-mercaptobenzoic acid: A novel platform for oligonucleotide immobilization[J]. Talanta, 2017, 165: Pages 69-75. DOI:10.1016/j.talanta.2016.12.025.
[4] WAN-YI CHEN. Electrochemical determination of bisphenol A with a glassy carbon electrode modified with gold nanodendrites[J]. Microchimica Acta, 2014, 182 3-4: 703-709. DOI:10.1007/s00604-014-1377-4.

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