Ethylhexaldehyde

  • Ethylhexanal
  • Butyl ethyl acetaldehyde
  • 2-Ethylhexanal
  • 2-Ethylcaproaldehyde
Formula
C8H16O
Structure
Description
White liquid with a mild odor.
Uses
Chemical intermediate in perfumes,2-ethylhexanoic acid, 1-tetradecanol, 2-(2-cyanoethyl)-2-ethylhexanal.

Registry Numbers and Inventories.
CAS
123-05-7
EC (EINECS/ELINCS)
204-596-5
R 10 36/37/38 51/53
S 26 36 57 60
RTECS
MN7525000
RTECS class
Primary Irritant
UN (DOT)
1191
Beilstein/Gmelin
1700556
Beilstein Reference
4-01-00-03345
Swiss Giftliste 1
G-1802
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C8H16O
Formula mass
128.24
Melting point, °C
-67
Boiling point, °C
163
Vapor pressure, mmHg
2.1 (25 C)
Vapor density (air=1)
4.42
Critical temperature
340
Critical pressure
27.4
Density
0.820 g/cm3 (20 C)
Solubility in water
700 mg/L
Viscosity
1 mPa.s @ 20 C
Refractive index
1.4159 (20 C)
Partition coefficient, pKow
2.32
Heat of vaporization
40.0 kJ/mol
Heat of combustion
-3864 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store near combustible materials. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid contact with clothing and other combustible materials. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Do not breathe dust or fumes.
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
Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Use a spark-proof tool. Provide ventilation. Do not use combustible materials such as paper towels to clean up spill. A vapor suppressing foam may be used to reduce vapors.
Stability
Stable under normal temperatures and pressures. May ignite when spilled on clothing, paper, or other absorbent material.
Incompatibilities
Strong oxidizing agents, strong bases.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
44
Autoignition, °C
190
Upper exp. limit, %
7.2
Lower exp. limit, %
0.9
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Containers may explode in the heat of a fire. May form explosive peroxides. Extinguishing media: Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water. In case of fire, use alcohol foam.
Fire potential
HIGHLY FLAMMABLE.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
2
 
 
Reactivity
1
 

Health.
Poison_Class
4
Exposure effects
Chronic exposure may cause liver damage. Inhalation of vapors at high concentrations may produce pulmonary edema characterized by fluid build-up in the lungs.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause convulsions.
   Inhalation
Causes respiratory tract irritation. May cause narcotic effects in high concentration. Vapors may cause dizziness or suffocation. Inhalation of vapors may cause a burning sensation, bronchial constriction, choking, and/or coughing.
   Skin
May be absorbed through the skin. Causes redness and pain. Causes severe skin irritation and possible burns.
   Eyes
Causes redness and pain. Causes eye irritation and possible burns.

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. Wash mouth out with 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. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
1191
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
EHA
 
IMO Chemical Code
17
IMO Pollution Category
B
IMO Hazard code
P