Hexanoic acid

  • Caproic acid
  • Butylacetic acid
  • Hexylic acid
  • Capronic acid
  • n-Hexoic acid
  • Pentylformic acid
Formula
CH3(CH2)4COOH
Structure
Description
Oily, colorless or slightly yellow liquid, with a characteristic goat- or limburger cheese-like odor.
Uses
As insect attractant.

Registry Numbers and Inventories.
CAS
142-62-1
EC (EINECS/ELINCS)
205-550-7
EC Class
corrosive
R 34 20/21/22
S 26 36/37/39 45
RTECS
MO5250000
RTECS class
Mutagen; Primary Irritant
UN (DOT)
2829
Merck
13,1765
Beilstein/Gmelin
773837
Beilstein Reference
4-02-00-00917
EPA OPP
128917
Swiss Giftliste 1
G-2176
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H12O2
Formula mass
116.16
Melting point, °C
-4.8
Boiling point, °C
202
Vapor pressure, mmHg
0.16 (25 C)
Vapor density (air=1)
4.01
Saturation Concentration
Approximately 260 ppm (0.026%) at 25 C (calculated)
Odor Threshold Odor threshold 3.0 mg/kg
Critical temperature
387
Critical pressure
31.58
Density
0.9276 g/cm3 (20 C)
Solubility in water
Very soluble
Viscosity
2.84 cp (25 C)
Surface tension
23.4 g/s2 @ 70 C
Refractive index
1.4165 (15 C)
pKa/pKb
4.78 (pKa)
Partition coefficient, pKow
1.84
Heat of vaporization
46.6 kJ/mol
Heat of combustion
-3492 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
D1B E
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Do not ingest or inhale.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Do not get water inside containers.
Disposal code
4
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Bases, oxidizing agents, reducing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
102
Autoignition, °C
380
Upper exp. limit, %
8.2
Lower exp. limit, %
1.3
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
Combustion products
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Health
3
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OEL-RUSSIA:STEL 5 mg/m3
Poison_Class
4
Exposure effects
Abnormal neuropsychologic function has been reported following hydrochloric acid exposure from a leaking tanker truck.
   Ingestion
Causes gastrointestinal tract burns. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.
   Inhalation
Effects may be delayed. Causes chemical burns to the respiratory tract. May be harmful if inhaled.
   Skin
Harmful if absorbed through the skin. Causes skin burns. Effects of contact may be delayed.
   Eyes
Causes eye burns.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed.

Transport.
UN number
2829
Response guide
Hazard class
8
Packing Group
III
 
USCG CHRIS Code
HXO
 
HS Code
2915 90 80
 
Std. Transport #
4931450
 
IMO Chemical Code
18
IMO Pollution Category
D