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Carboxylic acids and anhydrides

6-Hydroxyhexanoic acid

Also known as Hexanoic acid, 6-hydroxy-, epsilon-Hydroxycaproic acid, 5-hydroxypentanecarboxylic acid

CAS 1191-25-9Formula C6H12O3Molar mass 132.16 g/molEC 681-173-5
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Harmful or irritant 9 suppliers listed
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6-Hydroxyhexanoic acid chemical structure, C6H12O3, CAS 1191-25-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1191-25-9
Formula
C6H12O3
Molar mass
132.16 g/mol
Physical form
Solid
HS code
291819
Category
Carboxylic acids and anhydrides
Illustrative photo, closed jumbo bulk bags in a warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 6-Hydroxyhexanoic acid?

Plain description, key identifiers and synonyms

6-hydroxyhexanoic acid is an -hydroxy fatty acid comprising hexanoic acid having a hydroxy group at the 6-position. It has a role as a bacterial xenobiotic metabolite. It is an omega-hydroxy-medium-chain fatty acid, a 6-hydroxy monocarboxylic acid and a straight-chain fatty acid. It is functionally related to a hexanoic acid. It is a conjugate acid of a 6-hydroxyhexanoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
6-hydroxyhexanoic acid
CAS number
1191-25-9 CAS number cross-checkedOther or deprecated CAS: 28158-18-1
EC number
681-173-5
Molecular formula
C6H12O3
UNII
3Y3OX37NM8
MDL number
MFCD00046560
InChIKey
IWHLYPDWHHPVAA-UHFFFAOYSA-N
InChI
InChI=1S/C6H12O3/c7-5-3-1-2-4-6(8)9/h7H,1-5H2,(H,8,9)
SMILES (canonical and isomeric)
C(CCC(=O)O)CCO

Synonyms

  • Hexanoic acid, 6-hydroxy-
  • epsilon-Hydroxycaproic acid
  • 5-hydroxypentanecarboxylic acid
  • 6-Hydroxycaproic acid
  • 6-hydroxy caproic acid
  • 6-hydroxy-hexanoic acid
  • 5-carboxypentanol
  • 6-hydroxy-caproic acid
  • 6-Hydroxyhexanoic acid #
  • Hexanoic acid,6-hydroxy-
  • 6-Hydrocaproic acid
  • epsilon-hydroxyhexanoic acid
  • 6-Hydroxycaproic acid, 6-hydroxyhexanoic acid, 6-Hydroxyhexanoic acid,

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Solidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
132.16 g/molcalc.
Exact mass
132.0786 Dacalc.
LogP (octanol/water)
0.62calc.
Topological polar surface area
57.53 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
5calc.
Heavy atoms
9calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.83calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H228Flammable solid.
  • H314Causes severe skin burns and eye damage.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (26)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

6-Hydroxyhexanoic acid suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 9 suppliers
9 of 9 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

9 suppliers in 4 countries

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6-Hydroxyhexanoic acid price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • bacterial metabolite
  • bacterial xenobiotic metabolite
  • metabolite
  • prokaryotic metabolite
  • xenobiotic metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 6-Hydroxyhexanoic acid is traded under.

HS 2918.19Indicative HS code

Carboxylic acids with alcohol function but without other oxygen function, their…

World exports in 2024
$1.37B
+0.5% vs 2023, imports $1.18B
2019 to 2024
Top exporters
  1. China23.7%
  2. Italy14.7%
  3. India * partner reported12.0%
Top importers
  1. Germany11.7%
  2. South Korea9.8%
  3. Italy9.6%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 6-Hydroxyhexanoic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 6-Hydroxyhexanoic acid, based on the data on this page

What is 6-Hydroxyhexanoic acid?

6-hydroxyhexanoic acid is an -hydroxy fatty acid comprising hexanoic acid having a hydroxy group at the 6-position. It has a role as a bacterial xenobiotic metabolite. It is an omega-hydroxy-medium-chain fatty acid, a 6-hydroxy monocarboxylic acid and a straight-chain fatty acid.

What is the CAS number of 6-Hydroxyhexanoic acid?

The CAS registry number of 6-Hydroxyhexanoic acid is 1191-25-9. Other or deprecated CAS numbers: 28158-18-1.

What is the molecular formula and weight of 6-Hydroxyhexanoic acid?

The molecular formula of 6-Hydroxyhexanoic acid is C6H12O3 and its molar mass is 132.16 g/mol.

What is 6-Hydroxyhexanoic acid used for?

Known uses and roles of 6-Hydroxyhexanoic acid include building blocks in research and laboratory, bacterial metabolite, bacterial xenobiotic metabolite, metabolite, prokaryotic metabolite and 1 more.

Is 6-Hydroxyhexanoic acid hazardous?

6-Hydroxyhexanoic acid carries the GHS signal word "Danger". Main hazards: flammable solid, causes severe skin burns and eye damage, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 6-Hydroxyhexanoic acid?

6-Hydroxyhexanoic acid is usually classified under HS code 291819 (Carboxylic acids with alcohol function but without other oxygen function, their…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 6-Hydroxyhexanoic acid?

CompoundList lists 9 suppliers of 6-Hydroxyhexanoic acid in China, United States, Canada and Slovakia. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 6-Hydroxyhexanoic acid?

Suppliers quote 6-Hydroxyhexanoic acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 6-Hydroxyhexanoic acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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