Octane

  • n-Octane
Formula
CH3(CH2)6CH3
Structure
Description
Colorless liquid, gasoline-like odor.
Uses
Chemical agent in petroleum industry, offers highly desirable blending values to achieve certain preferred antiknock & combustion qualities for high compression engine fuels.

Registry Numbers and Inventories.
CAS
111-65-9
EC (EINECS/ELINCS)
203-892-1
EC Index Number
601-009-00-8
EC Class
Highly flammable; Harmful; Irritant; Vapours may cause drowsiness and dizziness; Dangerous for the Environment
R 11 38 50/53 65 67
S 9 16 29 33 60 61 62
RTECS
RG8400000
RTECS class
Other
UN (DOT)
1262
Merck
12,6847
Beilstein/Gmelin
1696875
Beilstein Reference
4-01-00-00412
Swiss Giftliste 1
G-2665
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H18
Formula mass
114.23
Melting point, °C
-57
Boiling point, °C
126
Vapor pressure, mmHg
14 (25 C)
Vapor density (air=1)
3.9
Saturation Concentration
1.44% (14,400 ppm) @ 25 C
Evaporization number
1.4 (butyl acetate=1)
Odor Threshold Odor threshold 4 ppm
Critical temperature
296
Critical pressure
24.8
Density
0.703 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
0.706 cp @ 0C
Surface tension
21.80 g/s2 (in at 20 C)
Refractive index
1.39764 (20 C)
Dielectric constant
1.9 (20 C)
Partition coefficient, pKow
5.18
Heat of fusion
20.75 kJ/mol
Heat of vaporization
41.48 kJ/mol
Heat of combustion
-5474 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
B2
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Do not ingest or inhale. 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 impervious gloves. 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
Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Provide ventilation.
Disposal code
1
Stability
Stable under normal temperatures and pressures. Forms explosive mixtures with air.
Incompatibilities
Oxidizing agents, coatings, plastics, rubber.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
13
Autoignition, °C
210
Upper exp. limit, %
6.5
Lower exp. limit, %
0.8
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Can release vapors that form explosive mixtures at temperatures above the flashpoint. Use water spray to keep fire-exposed containers cool. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. May accumulate static electrical charges, and may cause ignition of its own vapors. Extinguishing media: Use foam, dry chemical, or carbon dioxide. Water may be ineffective. Water may spread fire.
Fire potential
Dangerous, when exposed to heat, flame.
Hazards
Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.
Combustion products
Toxic gases and vapors (such as carbon monoxide) may be released in a fire involving octane.
Health
1
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: TWA 500 ppm (2350 mg/m3) NIOSH REL: TWA 75 ppm (350 mg/m3) C 385 ppm (1800 mg/m3) 15-minute NIOSH IDLH: 1000 ppm LEL
Poison_Class
5
Exposure effects
Prolonged or repeated skin contact may cause defatting and dermatitis.
   Ingestion
Aspiration hazard. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal.
   Inhalation
Causes respiratory tract irritation. Irritation may lead to chemical pneumonitis and pulmonary edema. May cause narcotic effects in high concentration. Exposure produces central nervous system depression.
   Skin
Causes skin irritation. May be absorbed through the skin in harmful amounts. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Possible aspiration hazard. Get medical aid immediately.
   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
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
1262
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
OAN
 
HS Code
2901 10 90
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P