Linolenic acid

  • cis,cis,cis-9,12,15-Octadecatrienoic acid
  • (Z,Z,Z)-Octadeca-9,12,15-trienoic acid
  • 9,12,15-Octadecatrienoic acid, (9Z,12Z,15Z)-
Formula
C18H30O2
Structure
Description
Clear colorless liquid.
Uses
Essential fatty acid.

Registry Numbers and Inventories.
CAS
463-40-1
EC (EINECS/ELINCS)
207-334-8
Merck
12,5530
Beilstein/Gmelin
784281
Beilstein Reference
0-02-00-00500
Swiss Giftliste 1
G-8120
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C18H30O2
Formula mass
278.44
Melting point, °C
-9.5
Boiling point, °C
443
Vapor pressure, mmHg
4E-9 (25 C)
Density
0.9141 g/cm3 (18 C)
Solubility in water
Insoluble
Refractive index
1.4800 (20 C)
pKa/pKb
4.78 (pKa)
Partition coefficient, pKow
6.68
Heat of vaporization
76.9 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4 C).
Handling
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
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.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Bases - oxidizing agents - reducing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
276
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
This chemical is probably combustible.

Health.
Poison_Class
-
Exposure effects
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
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.
   Inhalation
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
   Skin
Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.