Hexanoic acid

purum, ≥98.0% (GC)

Acid C6, Caproic acid
Linear Formula:
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

vapor density

4 (vs air)

vapor pressure

0.18 mmHg ( 20 °C)




≥98.0% (GC)

refractive index

n20/D 1.416
n20/D 1.4161 (lit.)


202-203 °C (lit.)
203-205 °C


−4 °C (lit.)


water: slightly soluble 1.082g/100g(lit.)
diethyl ether: soluble(lit.)
ethanol: soluble(lit.)


0.927 g/mL at 25 °C (lit.)



SMILES string




InChI key


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CorrosionSkull and crossbones

Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN 2829 8 / PGIII

WGK Germany


Flash Point(F)

215.6 °F - closed cup

Flash Point(C)

102 °C - closed cup

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

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  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What is the molarity of hexanoic acid?

    Based on density of 0.927 g/mL and MW of 116.16, the effective molarity of this neat liquid is 7.98 M.

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Acyl migration in 1, 2-dibutyrin dependence on solvent and water activity.
Sjursnes BJ and Anthonsen T.
Biocatalysis and Biotransformation, 9(1-4), 285-297 (1994)
A study on the stability of MCM-41-supported heteropoly acids under liquid-and gas-phase esterification conditions.
Verhoef MJ, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 27(2), 365-371 (1999)
Formation of ultrathin polypyrrole (PPY) films on alumina particles using adsorbed hexanoic acid as a template.
Cho G, et al.
Langmuir, 16(10), 4424-4429 (2000)
Pierre Daumar et al.
Bioconjugate chemistry, 23(8), 1557-1566 (2012-07-13)
Solid tumors often develop an acidic microenvironment, which plays a critical role in tumor progression and is associated with increased level of invasion and metastasis. The 37-residue pH (low) insertion peptide (pHLIP) is under study as an imaging platform because...
A C Schoots et al.
Journal of chromatography, 164(1), 1-8 (1979-09-11)
A fast and reliable procedure for gas chromatographic profiling of components in ultrafiltrated uremic serum has been developed, using glass capillary columns. Sample pretreatment consists of ultrafiltration, evaporation and silylation. Some twenty components are identified by electron-impact and chemical ionization...

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