Hexaldehyde

  • Hexanal
  • Caproaldehyde
  • Caproic aldehyde
Formula
CH3(CH2)4CHO
Structure
Description
A clear colorless liquid with a pungent odor.
Uses
Food additive as flavor ingredient.

Registry Numbers and Inventories.
CAS
66-25-1
EC (EINECS/ELINCS)
200-624-5
EC Class
flammable, irritant
S 16 23 24/25
RTECS
MN7175000
RTECS class
Mutagen; Natural Product; Primary Irritant
UN (DOT)
1207
Merck
13,1766
Beilstein/Gmelin
506198
Beilstein Reference
4-01-00-03296
EPA OPP
128950
Swiss Giftliste 1
G-2271
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H12O
Formula mass
100.16
Melting point, °C
-56
Boiling point, °C
131
Vapor pressure, mmHg
12 (25 C)
Vapor density (air=1)
3.45
Density
0.8498 g/cm3 (0 C)
Solubility in water
Insoluble
Viscosity
0.69 mPas 20 C
Refractive index
1.407 (20 C)
Partition coefficient, pKow
1.78
Heat of fusion
13.3 kJ/mol
Heat of vaporization
36.48 kJ/mol
Heat of combustion
-3916 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Keep under a nitrogen blanket. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Wash thoroughly after handling. 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. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Disposal code
7
Stability
Oxidizes when exposed to air.
Incompatibilities
Strong oxidizing agents, reducing agents, acids, bases, caustics.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
25
Autoignition, °C
220
Upper exp. limit, %
8.1
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. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
Fire potential
Moderate fire hazard, when exposed to heat or flame
Hazards
Vapor is heavier than air and may travel to a source of ignition and flash back.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
3
 
 
Reactivity
1
 

Health.
Poison_Class
4
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Expected to be a low ingestion hazard. Ingestion of large amounts may cause CNS depression.
   Inhalation
May cause respiratory tract irritation. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause burning sensation in the chest.
   Skin
Causes mild skin irritation. May cause dermatitis. May cause cyanosis of the extremities.
   Eyes
Causes mild eye irritation. May cause chemical conjunctivitis and corneal damage.

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. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. 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.
UN number
1207
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
HAL
 
HS Code
2912 19 00
 
Std. Transport #
4909185