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Hexanoic acid

Description References
Hexanoic acid
Hexanoic acid
Chemical Name:
Hexanoic acid
C6;NA-1706;acid c-6;FEMA 2559;hexacid698;Hexansαure;N-CAPROATE;HEXOIC ACID;Capronsαure;Hexacid 698
Molecular Formula:
Formula Weight:
MOL File:

Hexanoic acid Properties

Melting point:
−4 °C(lit.)
Boiling point:
202-203 °C(lit.)
0.927 g/mL at 25 °C(lit.)
vapor density 
4 (vs air)
vapor pressure 
0.18 mm Hg ( 20 °C)
refractive index 
n20/D 1.4161(lit.)
Flash point:
220 °F
storage temp. 
Store below +30°C.
water: slightly soluble1.082g/100g(lit.)
4.85(at 25℃)
Clear colorless to light yellow
4 (1g/l, H2O, 20℃)
Water Solubility 
1.1 g/100 mL (20 ºC)
Stable. Incompatible with bases, reducing agents and oxidizing agents. Flammable.
CAS DataBase Reference
142-62-1(CAS DataBase Reference)
NIST Chemistry Reference
Hexanoic acid(142-62-1)
EPA Substance Registry System
Hexanoic acid(142-62-1)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  C,Xi
Risk Statements  34-21-20/21/22
Safety Statements  26-36/37/39-45-25
RIDADR  UN 2829 8/PG 3
WGK Germany  1
RTECS  MO5250000
Hazard Note  Irritant
HazardClass  8
PackingGroup  III
HS Code  29159000
Hazardous Substances Data 142-62-1(Hazardous Substances Data)
Toxicity LD50 orally in rats: 3.0 g/kg (Smyth, Carpenter)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
Precautionary statements:
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Hexanoic acid price More Price(28)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 153745 Hexanoic acid ≥99% 142-62-1 2.5g $12.6 2018-11-13 Buy
Sigma-Aldrich 153745 Hexanoic acid ≥99% 142-62-1 100g $29.5 2018-11-13 Buy
TCI Chemical H0105 Hexanoic Acid >98.0%(GC)(T) 142-62-1 25mL $14 2017-12-01 Buy
TCI Chemical H0105 Hexanoic Acid >98.0%(GC)(T) 142-62-1 500mL $31 2017-12-01 Buy
Alfa Aesar A13789 Hexanoic acid, 98+% 142-62-1 500ml $32 2018-11-13 Buy

Hexanoic acid Chemical Properties,Uses,Production


Hexanoic acid (also known as Caproci acid, general formula: C5H11COOH) belongs to a kind of saturated medium-chain fatty acid derived from hexane with an unpleasant odor. It is a colorless oily liquid naturally existing in various plant and animal fats and oils. One of its major applications is for the manufacturing of its esters for being artificial flavors. It is also important for the manufacturing of hexyl derivatives such as hexylphenols. Hexanoic acid belongs to medium chain triglycerides (MCT) that are widely used as a nutrition supplement that added to foods, drugs and cosmetics.


Chemical Properties

colourless liquid


Intermediates of Liquid Crystals


ChEBI: A C6, straight-chain saturated fatty acid.


manufacture of esters for artificial flavors, and of hexyl derivatives, especially hexylphenols, hexylresorcinol, etc.

General Description

A white crystalline solid or colorless to light yellow solution with an unpleasant odor. Insoluble to slightly soluble in water and less dense than water. Contact may severely irritate skin, eyes and mucous membranes. May be toxic by ingestion, inhalation and skin absorption. Used to make perfumes.

Air & Water Reactions

Slightly water soluble.

Reactivity Profile

Hexanoic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in Hexanoic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions. Hexanoic acid reacts with bases, oxidizing agents and reducing agents.

Health Hazard

Harmful if swallowed, inhaled, or absorbed through skin. Material is extremely destructive to tissue of mucous membranes and upper respiratory tract, eyes and skin. Inhalation may be fatal as a result of spasm, inflammation and edema of the larynx and bronchia, chemical pneumonitis and pulmonary edema. Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting.

Fire Hazard

Special Hazards of Combustion Products: Irritating vapor may be generated.

Purification Methods

Dry the acid with MgSO4 and fractionally distil it from CaSO4. [Beilstein 2 IV 917.]

Hexanoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

Hexanoic acid Suppliers

Global( 250)Suppliers
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