Hexanoic acid

analytical standard

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

Quality Level


analytical standard

vapor density

4 (vs air)

vapor pressure

0.18 mmHg ( 20 °C)


≥99.0% (GC)



shelf life

limited shelf life, expiry date on the label


HPLC: suitable
gas chromatography (GC): suitable

refractive index

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


202-203 °C (lit.)


−4 °C (lit.)


0.927 g/mL at 25 °C (lit.)

Featured Industry

Cleaning Products
Flavors and Fragrances
Food and Beverages
Personal Care





SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide

General description

Hexanoic acid is a six-carbon saturated fatty acid found naturally in oils and animal fats as well as produced by certain anaerobic bacteria. It has been widely used in industrial applications such as perfumes, medicine, food additives, lubricating grease, tobacco flavor, rubber, and dyes.


Hexanoic acid may be used as a reference standard for the determination of the analyte:
  • In Dortyol yerli orange juices by high performance liquid chromatography method
  • In Lomatogonium rotatum, a herbal medicine sample using acridone-9-ethyl-p-toluenesulfonate (AETS) as a fluorescence derivatization reagent by high performance liquid chromatography (HPLC).

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


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.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  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.

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

  7. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

HPLC-APCI-MS determination of free fatty acids in Tibet folk medicine lomatogonium rotatum with fluorescence detection and mass spectrometric identification.
Li Y, et al.
Journal of Liquid Chromatography and Related Technologies, 29(18), 2741-2751 (2006)
Determination of volatile, phenolic, organic acid and sugar components in a Turkish cv. Dortyol (Citrus sinensis L. Osbeck) orange juice.
Kelebek H and Selli S
Journal of the Science of Food and Agriculture, 91(10), 1855-1862 (2011)
A biosynthetic pathway for hexanoic acid production in Kluyveromyces marxianus.
Cheon Y, et al.
Journal of Biotechnology, 182, 30-36 (2014)
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...
K A Traul et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 38(1), 79-98 (2000-02-24)
Medium chain triglycerides (MCTs) are a family of triglycerides, containing predominantly, caprylic (C(8)) and capric (C(10)) fatty acids with lesser amounts of caproic (C(6)) and lauric (C(12)) fatty acids. MCTs are widely used for parenteral nutrition in individuals requiring supplemental...
In this study, SPME was used for the analysis of free fatty acids in Parmesan cheese using a 65 μm Carbowax/divinylbenzene (DVB) SPME fiber. Headspace extraction of the cheese sample was conducted at 65 °C for 15 minutes and analyzed by GC with FID detection. SPME is ideal for analyzing the volatiles associated with solid food samples. The phase chemistry of the Nukol GC column provides excellent peak shape of acidic compounds.
Read More

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

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon


Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.