W255904 Sigma-Aldrich

Hexanoic acid

≥98%, FCC, FG

Synonym: Acid C6, Caproic acid

  • CAS Number 142-62-1

  • Linear Formula CH3(CH2)4COOH

  • Molecular Weight 116.16

  •  FEMA Number 2559

  •  Beilstein/REAXYS Number 773837

  •  EC Number 205-550-7

  •  Council of Europe no. 9c

  •  MDL number MFCD00004421

  •  PubChem Substance ID 24901147

  •  Flavis number 8.009

  •  NACRES NA.21



Related Categories Alphabetical Listings, Certified Food Grade Products, E - H, E-H, Flavors and Fragrances,
biological source   synthetic
grade   FG
reg. compliance   FCC
  FDA 21 CFR (117)
  FDA 21 CFR (172.515)
  EU Regulation 1334/2008 & 178/2002
vapor density   4 (vs air)
vapor pressure   0.18 mmHg ( 20 °C)
assay   ≥98%
refractive index   n20/D 1.4161 (lit.)
bp   202-203 °C (lit.)
mp   −4 °C (lit.)
density   0.927 g/mL at 25 °C (lit.)
Agency/Method   meets purity specifications of JECFA
Documentation   see Safety & Documentation for available documents
Organoleptic   cheese; fatty; sour
food allergen   no known allergens


General description

Hexanoic acid is a precursor of ethyl caproate, the key flavor constituent of Chinese strong-flavored liquor (CSFL).


Hexanoic acid has been used as a standard during the identification and quantitation of volatile compounds in Swiss Tilsit cheeses by a combination of headspace solid-phase microextraction gas chromatography, mass spectrometry and olfactometry.


1 kg in aluminum bottle

5 kg in composite drum

25 kg in poly drum

Other Notes

Download our Flavors and Fragrances Catalog to view our entire product line.

Subscribe to our Newsletter to keep up to date on our latest Flavors and Fragrances offerings.

Safety & Documentation

Safety Information

Signal word 
Hazard statements 
UN 2829 8 / PGIII
WGK Germany 
Flash Point(F) 
215.6 °F
Flash Point(C) 
102 °C

Frequently Asked Questions

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.
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.
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 orview local office numbers.
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.
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.
My question is not addressed here, how can I contact Technical Service for assistance?
Ask a Scientist here.
Show more questions
Protocols & Articles


GC Analysis of Free Fatty Acids in Parmesan Cheese using Nukol™ after SPME using 65 μm Carbowax/DVB Fiber

From our library of Articles, Sigma-Aldrich presents GC Analysis of Free Fatty Acids in Parmesan Cheese using Nukol™ after SPME using 65 μm Carbowax/DVB Fiber
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification, Solid phase microextractions

GC Analysis of Fresh and Rancid Potato Chips on SPB®-1 SULFUR after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber

From our library of Articles, Sigma-Aldrich presents GC Analysis of Fresh and Rancid Potato Chips on SPB®-1 SULFUR after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber
Keywords: AGE, Chromatin immunoprecipitation, Chromatography, Gas chromatography, Mass spectrometry, Oxidations, Purification, Size-exclusion chromatography, Solid phase microextractions

Securing a Traceable Supply Chain for Food Grade Flavor Ingredients

Introduction Defining "Food Grade" Understanding "Food Grade" Versus "Industrial Grade" Top Questions to Ask a Flavor & Fragrances Supplier The Sigma-Aldrich Approach
Dr. Luke Grocholl
Quality Assurance Supervisor, Sigma-Aldrich Flavors & Fragrances
Keywords: Food & Beverage, Food Safety, Solvents

Understanding the Complexities of Kosher Ingredients

Introduction What is Kosher Product Considerations for Kosher Certification Kosher's Added Benefit to the Food Industry Sigma-Aldrich's Kosher Experience and Offering
Dr. Luke Grocholl1, Rabbi Gershon Segal

1Dr. Luke Grocholl, Quality Assurance Supervisor, Sigma-Aldrich Flavors & Fragrances
Keywords: Fermentation, Food & Beverage, Safety industry

Related Content

Flavors and Fragrances Quality and Regulatory

From a comprehensive vendor approval process, to the testing of raw material at receipt as well as when product is ready to be shipped; we prove our dedication to supply chain transparency, every day.
Keywords: Allergens, Food Safety, Solvents

Peer-Reviewed Papers


Related Products

related product

Product #


Add to Cart

07475 Timestrip® Food

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?