Docosanoic acid

  • Behenic acid
  • Hydrofol acid
Formula
CH3(CH2)20CO2H
Structure
Description
Waxy white powder.
Uses
In cosmetics, waxes, plasticizers, chemicals, stabilizers.

Registry Numbers and Inventories.
CAS
112-85-6
EC (EINECS/ELINCS)
204-010-8
S 22 24/25
Merck
13,1024
Beilstein/Gmelin
1792887
Beilstein Reference
4-10-00-01608
Swiss Giftliste 1
G-7495
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C22H44O2
Formula mass
340.59
Melting point, °C
80
Boiling point, °C
306
Vapor pressure, mmHg
8E-7 (25 C)
Density
0.8221 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
12.8 cp (80 C)
Surface tension
30.1 g/s2 (80 C)
Refractive index
1.427 (20 C)
pKa/pKb
4.78 (pKa)
Partition coefficient, pKow
10.34
Heat of fusion
78.6 kJ/mol
Heat of vaporization
67.7 kJ/mol
Heat of combustion
-1398 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. 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
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
176
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
-
Exposure effects
The toxological properties of this substance have not been fully investigated.
   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
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
USCG CHRIS Code
FAD
 
IMO Chemical Code
18
IMO Pollution Category
III